Isotopes of Lanthanum

List of known isotopes of the element Lanthanum.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
¹¹⁷La	23.5 ±26 ms	syn.	(3/2+ 3/2-)	—	1.169·10⁸ ±215 keV/c²	2001
¹²⁰La	2.8 ±2 s	syn.	—	—	1.199·10⁸ ±322 keV/c²	1984
¹²¹La	5.3 ±2 s	syn.	—	—	1.209·10⁸ ±322 keV/c²	1988
¹²²La	8.6 ±5 s	syn.	—	—	1.219·10⁸ ±320 keV/c²	1984
¹²³La	16.3 ±3 s	syn.	—	—	1.229·10⁸ ±210 keV/c²	1978
¹²⁴La	21 ±4 s	syn.	—	—	1.239·10⁸ ±60.83 keV/c²	1978
¹²⁵La	64.8 ±12 s	syn.	(3/2+)	—	1.249·10⁸ ±27.9 keV/c²	1973
¹²⁶La	54 ±2 s	syn.	(4 5)	—	1.259·10⁸ ±97.16 keV/c²	1961
¹²⁷La	5.1 ±1 m	syn.	(11/2-)	—	1.269·10⁸ ±27.91 keV/c²	1963
¹²⁸La	5.18 ±14 m	syn.	(5+)	—	1.279·10⁸ ±58.45 keV/c²	1961
¹²⁹La	11.6 ±2 m	syn.	(3/2+)	—	1.289·10⁸ ±22.91 keV/c²	1963
¹³⁰La	8.7 ±1 m	syn.	3(+)	—	1.299·10⁸ ±27.85 keV/c²	1961
¹³¹La	59 ±2 m	syn.	3/2+	—	1.309·10⁸ ±30 keV/c²	1951
¹³²La	4.8 ±2 h	syn.	2-	—	1.319·10⁸ ±39.03 keV/c²	1951
¹³³La	3.912 ±8 h	syn.	5/2+	—	1.329·10⁸ ±30 keV/c²	1950
¹³⁴La	6.45 ±16 m	syn.	1+	—	1.339·10⁸ ±21.39 keV/c²	1951
¹³⁵La	19.5 ±2 h	syn.	5/2+	4.848 ±0.006 fm	1.349·10⁸ ±10.12 keV/c²	1948
¹³⁶La	9.87 ±3 m	syn.	1+	—	1.359·10⁸ ±57.08 keV/c²	1950
¹³⁷La	60,000 ±2 a	syn.	7/2+	4.849 ±0.0053 fm	1.369·10⁸ ±1.76 keV/c²	1948
¹³⁸La	1.03·10¹¹ ±1 a	0.08881 ±7.1·10^-4 %	5+	4.847 ±0.0051 fm	1.379·10⁸ ±0.446 keV/c²	1947
¹³⁹La	stab.	99.91 ±7.1·10^-4 %	7/2+	4.855 ±0.0049 fm	1.389·10⁸ ±0.651 keV/c²	1924
¹⁴⁰La	1.678 ±21 d	syn.	3-	—	1.399·10⁸ ±0.651 keV/c²	1935
¹⁴¹La	3.92 ±3 h	syn.	7/2(+)	—	1.409·10⁸ ±4.43 keV/c²	1951
¹⁴²La	91.1 ±5 m	syn.	2-	—	1.419·10⁸ ±6.748 keV/c²	1953
¹⁴³La	14.2 ±1 m	syn.	(7/2)+	—	1.429·10⁸ ±7.868 keV/c²	1951
¹⁴⁴La	40.8 ±4 s	syn.	(3-)	—	1.439·10⁸ ±13.88 keV/c²	1967
¹⁴⁵La	24.8 ±20 s	syn.	(5/2+)	—	1.449·10⁸ ±13.17 keV/c²	1974
¹⁴⁶La	6.1 ±3 s	syn.	(2-)	—	1.459·10⁸ ±1.797 keV/c²	1970
¹⁴⁷La	4.06 ±4 s	syn.	(5/2+)	—	1.469·10⁸ ±11.5 keV/c²	1979
¹⁴⁸La	1.26 ±8 s	syn.	(2-)	—	1.479·10⁸ ±20.9 keV/c²	1969
¹⁴⁹La	1.091 ±34 s	syn.	(3/2)	—	1.489·10⁸ ±214.9 keV/c²	1979
¹⁵⁰La	0.59 ±11 s	syn.	(3+)	—	1.499·10⁸ ±2.7 keV/c²	1993
¹⁵¹La	0.457 ± s	syn.	(1/2+)	—	1.509·10⁸ ±467.5 keV/c²	1994
¹⁵²La	0.298 ± s	syn.	(2-)	—	1.519·10⁸ ±322 keV/c²	1994
¹⁵³La	0.245 ±18 s	syn.	—	—	1.529·10⁸ ±322 keV/c²	1994
¹⁵⁴La	0.161 ±15 s	syn.	(2-)	—	1.539·10⁸ ±322 keV/c²	2017
¹⁵⁵La	101 ±28 ms	syn.	—	—	1.549·10⁸ ±429 keV/c²	2016
¹⁵⁶La	84 ±78 ms	syn.	(4+)	—	1.559·10⁸ ±429 keV/c²	2017
¹⁵⁷La	stab.	syn.	—	—	1.569·10⁸ ±322 keV/c²	2018

117LaLanthanum-117

Classification	z: 57; n: 60; m: 117
Half life	23.5 ±26 ms
Natural abundance	synthetic nuclide
Spin/parity	(3/2+ 3/2-)
Decay modes	proton emission; electron capture + β⁺ decay
Discovery	2001
Mass excess	-46,280 ±200 keV
Binding energy	8,086 ±2 keV
Single-particle energy	-820.1 ±3 keV
Neutron separation energy	14,290 ±379 keV
Q value for electron capture	11,180 ±320.4 keV

Point at nuclide Decay chain of Lanthanum-117

120LaLanthanum-120

Classification	z: 57; n: 63; m: 120
Half life	2.8 ±2 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1984
Mass excess	-57,570 ±300 keV
Binding energy	8,179 ±2 keV
Single-particle energy	269 ±361 keV
Neutron separation energy	10,620 ±424 keV
Q value for electron capture	11,310 ±424.3 keV
β⁻ decay energy	-7,840 ±583 keV
β⁻ decay energy with neutron	-21,830 ±583 keV

Point at nuclide Decay chain of Lanthanum-120

121LaLanthanum-121

Classification	z: 57; n: 64; m: 121
Half life	5.3 ±2 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay
Discovery	1988
Mass excess	-62,190 ±300 keV
Binding energy	8,217 ±2 keV
Single-particle energy	591 ±424 keV
Neutron separation energy	12,690 ±424 keV
Q value for electron capture	8,554 ±331.8 keV
β⁻ decay energy	-9,500 ±500 keV
β⁻ decay energy with neutron	-20,540 ±583 keV

Point at nuclide Decay chain of Lanthanum-121

122LaLanthanum-122

Classification	z: 57; n: 65; m: 122
Half life	8.6 ±5 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay; electron capture + proton emission
Discovery	1984
Mass excess	-64,550 ±298 keV
Binding energy	8,235 ±2 keV
Single-particle energy	1,087 ±330 keV
Neutron separation energy	10,420 ±423 keV
Q value for electron capture	10,060 ±299.3 keV
β⁻ decay energy	-6,669 ±499 keV
β⁻ decay energy with neutron	-19,930 ±499 keV

Point at nuclide Decay chain of Lanthanum-122

123LaLanthanum-123

Classification	z: 57; n: 66; m: 123
Half life	16.3 ±3 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay
Discovery	1978
Mass excess	-68,660 ±196 keV
Binding energy	8,267 ±2 keV
Single-particle energy	1,331 ±198 keV
Neutron separation energy	12,170 ±357 keV
Q value for electron capture	7,003 ±196.3 keV
β⁻ decay energy	-8,365 ±357 keV
β⁻ decay energy with neutron	-18,850 ±446 keV

Point at nuclide Decay chain of Lanthanum-123

124LaLanthanum-124

Classification	z: 57; n: 67; m: 124
Half life	21 ±4 s
Natural abundance	synthetic nuclide
Decay modes	electron capture + β⁺ decay
Discovery	1978
Mass excess	-70,260 ±56.66 keV
Binding energy	8,278 ±0.457 keV
Single-particle energy	1,892 ±57.94 keV
Neutron separation energy	9,679 ±204 keV
Q value for electron capture	8,831 ±58.03 keV
β⁻ decay energy	-5,343 ±303 keV
β⁻ decay energy with neutron	-18,050 ±303 keV

Point at nuclide Decay chain of Lanthanum-124

125LaLanthanum-125

Classification	z: 57; n: 68; m: 125
Half life	64.8 ±12 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1973
Mass excess	-73,760 ±25.99 keV
Binding energy	8,304 ±0.208 keV
Single-particle energy	1,958 ±28.84 keV
Neutron separation energy	11,570 ±62.34 keV
Q value for electron capture	5,909 ±28.22 keV
β⁻ decay energy	-7,102 ±197 keV
β⁻ decay energy with neutron	-16,920 ±299 keV

Point at nuclide Decay chain of Lanthanum-125

126LaLanthanum-126

Classification	z: 57; n: 69; m: 126
Half life	54 ±2 s
Natural abundance	synthetic nuclide
Spin/parity	(4 5)
Decay modes	electron capture + β⁺ decay
Discovery	1961
Mass excess	-74,980 ±90.5 keV
Binding energy	8,312 ±0.7183 keV
Single-particle energy	2,593 ±91.17 keV
Neutron separation energy	9,285 ±94.16 keV
Q value for electron capture	7,696 ±91.36 keV
β⁻ decay energy	-4,153 ±94.72 keV
β⁻ decay energy with neutron	-16,390 ±216 keV

Point at nuclide Decay chain of Lanthanum-126

127LaLanthanum-127

Classification	z: 57; n: 70; m: 127
Half life	5.1 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	(11/2-)
Decay modes	electron capture + β⁺ decay
Discovery	1963
Mass excess	-77,900 ±26 keV
Binding energy	8,333 ±0.2047 keV
Single-particle energy	2,515 ±28.84 keV
Neutron separation energy	10,990 ±94.16 keV
Q value for electron capture	4,921 ±28.37 keV
β⁻ decay energy	-5,917 ±38.85 keV
β⁻ decay energy with neutron	-15,150 ±38.16 keV

Point at nuclide Decay chain of Lanthanum-127

128LaLanthanum-128

Classification	z: 57; n: 71; m: 128
Half life	5.18 ±14 m
Natural abundance	synthetic nuclide
Spin/parity	(5+)
Decay modes	electron capture (EC)
Discovery	1961
Mass excess	-78,630 ±54.44 keV
Binding energy	8,337 ±0.4254 keV
Single-particle energy	3,096 ±55.61 keV
Neutron separation energy	8,800 ±60.33 keV
Q value for electron capture	6,743 ±54.47 keV
β⁻ decay energy	-3,092 ±61.2 keV
β⁻ decay energy with neutron	-14,720 ±61.63 keV

Point at nuclide Decay chain of Lanthanum-128

129LaLanthanum-129

Classification	z: 57; n: 72; m: 129
Half life	11.6 ±2 m
Natural abundance	synthetic nuclide
Spin/parity	(3/2+)
Decay modes	electron capture + β⁺ decay
Discovery	1963
Mass excess	-81,330 ±21.34 keV
Binding energy	8,356 ±0.1655 keV
Single-particle energy	3,243 ±21.4 keV
Neutron separation energy	10,760 ±58.48 keV
Q value for electron capture	3,737 ±23.78 keV
β⁻ decay energy	-5,037 ±35.16 keV
β⁻ decay energy with neutron	-13,870 ±35.16 keV

Point at nuclide Decay chain of Lanthanum-129

130LaLanthanum-130

Classification	z: 57; n: 73; m: 130
Half life	8.7 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	3(+)
Decay modes	electron capture + β⁺ decay
Discovery	1961
Mass excess	-81,630 ±25.94 keV
Binding energy	8,356 ±0.1996 keV
Single-particle energy	3,855 ±27.99 keV
Neutron separation energy	8,375 ±33.59 keV
Q value for electron capture	5,629 ±25.94 keV
β⁻ decay energy	-2,205 ±38.13 keV
β⁻ decay energy with neutron	-13,420 ±38.13 keV
Magnetic dipole moment	2.9 ±0.2 μN

Point at nuclide Decay chain of Lanthanum-130

131LaLanthanum-131

Classification	z: 57; n: 74; m: 131
Half life	59 ±2 m
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	electron capture + β⁺ decay
Discovery	1951
Mass excess	-83,770 ±27.94 keV
Binding energy	8,370 ±0.2133 keV
Single-particle energy	3,801 ±27.94 keV
Neutron separation energy	10,210 ±38.13 keV
Q value for electron capture	2,909 ±27.94 keV
β⁻ decay energy	-4,061 ±43.09 keV
β⁻ decay energy with neutron	-12,420 ±39.51 keV
Magnetic dipole moment	11.2 ±0.04 μN

Point at nuclide Decay chain of Lanthanum-131

132LaLanthanum-132

Classification	z: 57; n: 75; m: 132
Half life	4.8 ±2 h
Natural abundance	synthetic nuclide
Spin/parity	2-
Decay modes	electron capture + β⁺ decay
Discovery	1951
Mass excess	-83,730 ±36.35 keV
Binding energy	8,367 ±0.2754 keV
Single-particle energy	4,333 ±36.36 keV
Neutron separation energy	8,025 ±45.85 keV
Q value for electron capture	4,711 ±36.37 keV
β⁻ decay energy	-1,255 ±41.7 keV
β⁻ decay energy with neutron	-12,090 ±48.96 keV

Point at nuclide Decay chain of Lanthanum-132

133LaLanthanum-133

Classification	z: 57; n: 76; m: 133
Half life	3.912 ±8 h
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture + β⁺ decay
Discovery	1950
Mass excess	-85,500 ±27.94 keV
Binding energy	8,378 ±0.2101 keV
Single-particle energy	4,348 ±27.96 keV
Neutron separation energy	9,842 ±45.85 keV
Q value for electron capture	2,059 ±27.96 keV
β⁻ decay energy	-3,077 ±32.37 keV
β⁻ decay energy with neutron	-11,100 ±34.6 keV
Magnetic dipole moment	7.5 ±0.5 μN
Electric quadrupole moment	1.7 ±0.3 b

Point at nuclide Decay chain of Lanthanum-133

134LaLanthanum-134

Classification	z: 57; n: 77; m: 134
Half life	6.45 ±16 m
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1951
Mass excess	-85,220 ±19.93 keV
Binding energy	8,374 ±0.1487 keV
Single-particle energy	4,954 ±19.95 keV
Neutron separation energy	7,795 ±34.32 keV
Q value for electron capture	3,731 ±19.93 keV
β⁻ decay energy	-385.8 ±28.5 keV
β⁻ decay energy with neutron	-10,880 ±25.78 keV

Point at nuclide Decay chain of Lanthanum-134

135LaLanthanum-135

Classification	z: 57; n: 78; m: 135
Half life	19.5 ±2 h
Natural abundance	synthetic nuclide
Spin/parity	5/2+
Decay modes	electron capture + β⁺ decay
Discovery	1948
Mass excess	-86,650 ±9.432 keV
Binding energy	8,382 ±0.0699 keV
Single-particle energy	4,982 ±9.43 keV
Neutron separation energy	9,496 ±22.04 keV
Q value for electron capture	1,207 ±9.435 keV
β⁻ decay energy	-2,028 ±4.61 keV
β⁻ decay energy with neutron	-9,882 ±22.46 keV
Magnetic dipole moment	3.7 ±0.09 μN
Electric quadrupole moment	-0.4 ±0.4 b

Point at nuclide Decay chain of Lanthanum-135

136LaLanthanum-136

Classification	z: 57; n: 79; m: 136
Half life	9.87 ±3 m
Natural abundance	synthetic nuclide
Spin/parity	1+
Decay modes	electron capture + β⁺ decay
Discovery	1950
Mass excess	-86,040 ±53.17 keV
Binding energy	8,376 ±0.391 keV
Single-particle energy	5,475 ±53.17 keV
Neutron separation energy	7,465 ±54 keV
Q value for electron capture	2,849 ±53.17 keV
β⁻ decay energy	471 ±53.17 keV
β⁻ decay energy with neutron	-9,493 ±54.15 keV

Point at nuclide Decay chain of Lanthanum-136

137LaLanthanum-137

Classification	z: 57; n: 80; m: 137
Half life	60,000 ±2 a
Natural abundance	synthetic nuclide
Spin/parity	7/2+
Decay modes	electron capture (EC)
Discovery	1948
Mass excess	-87,150 ±1.64 keV
Binding energy	8,381 ±0.012 keV
Single-particle energy	5,542 ±1.621 keV
Neutron separation energy	9,174 ±53.19 keV
Q value for electron capture	580.5 ±1.659 keV
β⁻ decay energy	-1,223 ±1.6 keV
β⁻ decay energy with neutron	-8,704 ±1.607 keV
Magnetic dipole moment	2.696 ±0.006 μN
Electric quadrupole moment	0.21 ±0.04 b

Point at nuclide Decay chain of Lanthanum-137

138LaLanthanum-138

Classification	z: 57; n: 81; m: 138
Half life	1.03·10¹¹ ±1 a
Natural abundance	0.08881 ±7.1·10^-4 %
Spin/parity	5+
Decay modes	electron capture + β⁺ decay; β⁻ decay
Discovery	1947
Mass excess	-86,520 ±0.416 keV
Binding energy	8,375 ±0.003 keV
Single-particle energy	6,080 ±0.3407 keV
Neutron separation energy	7,443 ±1.658 keV
Q value for electron capture	1,748 ±0.485 keV
β⁻ decay energy	1,052 ±0.4018 keV
β⁻ decay energy with neutron	-8,666 ±0.4361 keV
Magnetic dipole moment	3.708 ±2·10^-4 μN
Electric quadrupole moment	0.39 ±0.03 b

Point at nuclide Decay chain of Lanthanum-138

139LaLanthanum-139

Classification	z: 57; n: 82; m: 139
Half life	stable nuclide
Natural abundance	99.91 ±7.1·10^-4 %
Spin/parity	7/2+
Discovery	1924
Mass excess	-87,230 ±0.607 keV
Binding energy	8,377 ±0.0044 keV
Single-particle energy	6,249 ±0.6558 keV
Neutron separation energy	8,780 ±0.7355 keV
Q value for electron capture	-2,309 ±0.658 keV
β⁻ decay energy	-264.7 ±1.998 keV
β⁻ decay energy with neutron	-7,728 ±0.7857 keV
Magnetic dipole moment	2.779 ±2·10^-4 μN
Electric quadrupole moment	0.206 ±0.004 b

Point at nuclide

140LaLanthanum-140

Classification	z: 57; n: 83; m: 140
Half life	1.678 ±21 d
Natural abundance	synthetic nuclide
Spin/parity	3-
Decay modes	β⁻ decay
Discovery	1935
Mass excess	-84,320 ±0.607 keV
Binding energy	8,355 ±0.0043 keV
Single-particle energy	6,687 ±0.6573 keV
Neutron separation energy	5,160 ±0.0194 keV
Q value for electron capture	-1,045 ±7.923 keV
β⁻ decay energy	3,762 ±1.336 keV
β⁻ decay energy with neutron	-5,426 ±1.999 keV
Magnetic dipole moment	0.73 ±0.015 μN
Electric quadrupole moment	0.087 ±0.013 b

Point at nuclide Decay chain of Lanthanum-140

141LaLanthanum-141

Classification	z: 57; n: 84; m: 141
Half life	3.92 ±3 h
Natural abundance	synthetic nuclide
Spin/parity	7/2(+)
Decay modes	β⁻ decay
Discovery	1951
Mass excess	-82,930 ±4.127 keV
Binding energy	8,343 ±0.0293 keV
Single-particle energy	6,950 ±8.903 keV
Neutron separation energy	6,689 ±4.136 keV
Q value for electron capture	-3,198 ±6.732 keV
β⁻ decay energy	2,501 ±3.927 keV
β⁻ decay energy with neutron	-2,927 ±3.929 keV

Point at nuclide Decay chain of Lanthanum-141

142LaLanthanum-142

Classification	z: 57; n: 85; m: 142
Half life	91.1 ±5 m
Natural abundance	synthetic nuclide
Spin/parity	2-
Decay modes	β⁻ decay
Discovery	1953
Mass excess	-80,030 ±6.286 keV
Binding energy	8,320 ±0.0443 keV
Single-particle energy	7,580 ±8.227 keV
Neutron separation energy	5,165 ±7.422 keV
Q value for electron capture	-2,182 ±8.635 keV
β⁻ decay energy	4,508 ±5.844 keV
β⁻ decay energy with neutron	-2,665 ±6.303 keV

Point at nuclide Decay chain of Lanthanum-142

143LaLanthanum-143

Classification	z: 57; n: 86; m: 143
Half life	14.2 ±1 m
Natural abundance	synthetic nuclide
Spin/parity	(7/2)+
Decay modes	β⁻ decay
Discovery	1951
Mass excess	-78,180 ±7.329 keV
Binding energy	8,306 ±0.0513 keV
Single-particle energy	7,618 ±9.415 keV
Neutron separation energy	6,218 ±9.546 keV
Q value for electron capture	-4,235 ±9.968 keV
β⁻ decay energy	3,434 ±7.581 keV
β⁻ decay energy with neutron	-1,710 ±7.581 keV

Point at nuclide Decay chain of Lanthanum-143

144LaLanthanum-144

Classification	z: 57; n: 87; m: 144
Half life	40.8 ±4 s
Natural abundance	synthetic nuclide
Spin/parity	(3-)
Decay modes	β⁻ decay
Discovery	1967
Mass excess	-74,850 ±12.93 keV
Binding energy	8,281 ±0.0898 keV
Single-particle energy	8,201 ±14.59 keV
Neutron separation energy	4,749 ±14.86 keV
Q value for electron capture	-3,083 ±14.77 keV
β⁻ decay energy	5,582 ±13.24 keV
β⁻ decay energy with neutron	-1,315 ±13.16 keV

Point at nuclide Decay chain of Lanthanum-144

145LaLanthanum-145

Classification	z: 57; n: 88; m: 145
Half life	24.8 ±20 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2+)
Decay modes	β⁻ decay
Discovery	1974
Mass excess	-72,840 ±12.26 keV
Binding energy	8,266 ±0.0846 keV
Single-particle energy	8,357 ±14.19 keV
Neutron separation energy	6,056 ±17.82 keV
Q value for electron capture	-5,320 ±14.91 keV
β⁻ decay energy	4,231 ±35.29 keV
β⁻ decay energy with neutron	-474.8 ±12.58 keV

Point at nuclide Decay chain of Lanthanum-145

146LaLanthanum-146

Classification	z: 57; n: 89; m: 146
Half life	6.1 ±3 s
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1970
Mass excess	-69,230 ±1.675 keV
Binding energy	8,239 ±0.0115 keV
Single-particle energy	8,993 ±8.64 keV
Neutron separation energy	4,457 ±12.38 keV
Q value for electron capture	-4,355 ±2.437 keV
β⁻ decay energy	6,404 ±14.71 keV
β⁻ decay energy with neutron	-225.5 ±33.94 keV

Point at nuclide Decay chain of Lanthanum-146

147LaLanthanum-147

Classification	z: 57; n: 90; m: 147
Half life	4.06 ±4 s
Natural abundance	synthetic nuclide
Spin/parity	(5/2+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1979
Mass excess	-66,680 ±10.71 keV
Binding energy	8,221 ±0.0729 keV
Single-particle energy	9,101 ±10.85 keV
Neutron separation energy	5,528 ±10.84 keV
Q value for electron capture	-6,415 ±22.46 keV
β⁻ decay energy	5,335 ±13.72 keV
β⁻ decay energy with neutron	876.1 ±18.16 keV

Point at nuclide Decay chain of Lanthanum-147

148LaLanthanum-148

Classification	z: 57; n: 91; m: 148
Half life	1.26 ±8 s
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1969
Mass excess	-62,710 ±19.46 keV
Binding energy	8,193 ±0.1315 keV
Single-particle energy	9,733 ±27.73 keV
Neutron separation energy	4,101 ±22.22 keV
Q value for electron capture	-5,164 ±19.52 keV
β⁻ decay energy	7,689 ±22.45 keV
β⁻ decay energy with neutron	1,233 ±21.27 keV

Point at nuclide Decay chain of Lanthanum-148

149LaLanthanum-149

Classification	z: 57; n: 92; m: 149
Half life	1.091 ±34 s
Natural abundance	synthetic nuclide
Spin/parity	(3/2)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1979
Mass excess	-60,220 ±200.2 keV
Binding energy	8,176 ±1.344 keV
Single-particle energy	9,963 ±200.2 keV
Neutron separation energy	5,582 ±201.2 keV
Q value for electron capture	-7,390 ±200.2 keV
β⁻ decay energy	6,450 ±200 keV
β⁻ decay energy with neutron	2,107 ±200.5 keV

Point at nuclide Decay chain of Lanthanum-149

150LaLanthanum-150

Classification	z: 57; n: 93; m: 150
Half life	0.59 ±11 s
Natural abundance	synthetic nuclide
Spin/parity	(3+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1993
Mass excess	-56,320 ±2.515 keV
Binding energy	8,149 ±0.0168 keV
Single-particle energy	10,760 ±3.556 keV
Neutron separation energy	4,162 ±200.2 keV
Q value for electron capture	-6,422 ±6.214 keV
β⁻ decay energy	8,535 ±11.96 keV
β⁻ decay energy with neutron	2,287 ±10.55 keV

Point at nuclide Decay chain of Lanthanum-150

151LaLanthanum-151

Classification	z: 57; n: 94; m: 151
Half life	0.457 ± s
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1994
Mass excess	-53,320 ±435.4 keV
Binding energy	8,129 ±2.883 keV
Single-particle energy	10,700 ±435.5 keV
Neutron separation energy	5,070 ±435.4 keV
Q value for electron capture	-8,371 ±591.3 keV
β⁻ decay energy	7,914 ±435.8 keV
β⁻ decay energy with neutron	3,465 ±435.6 keV

Point at nuclide Decay chain of Lanthanum-151

152LaLanthanum-152

Classification	z: 57; n: 95; m: 152
Half life	0.298 ± s
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1994
Mass excess	-49,290 ±300 keV
Binding energy	8,102 ±2 keV
Single-particle energy	11,630 ±500 keV
Neutron separation energy	4,051 ±529 keV
Q value for electron capture	-7,680 ±500 keV
β⁻ decay energy	9,690 ±361 keV
β⁻ decay energy with neutron	3,864 ±300 keV

Point at nuclide Decay chain of Lanthanum-152

153LaLanthanum-153

Classification	z: 57; n: 96; m: 153
Half life	0.245 ±18 s
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1994
Mass excess	-46,060 ±300 keV
Binding energy	8,081 ±2 keV
Single-particle energy	11,730 ±500 keV
Neutron separation energy	4,841 ±424 keV
Q value for electron capture	-9,590 ±500 keV
β⁻ decay energy	8,850 ±361 keV
β⁻ decay energy with neutron	4,849 ±361 keV

Point at nuclide Decay chain of Lanthanum-153

154LaLanthanum-154

Classification	z: 57; n: 97; m: 154
Half life	0.161 ±15 s
Natural abundance	synthetic nuclide
Spin/parity	(2-)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2017
Mass excess	-41,530 ±300 keV
Binding energy	8,051 ±2 keV
Single-particle energy	12,340 ±500 keV
Neutron separation energy	3,541 ±424 keV
Q value for electron capture	-8,610 ±583 keV
β⁻ decay energy	10,690 ±361 keV
β⁻ decay energy with neutron	5,309 ±361 keV

Point at nuclide Decay chain of Lanthanum-154

155LaLanthanum-155

Classification	z: 57; n: 98; m: 155
Half life	101 ±28 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2016
Mass excess	-37,930 ±400 keV
Binding energy	8,028 ±3 keV
Single-particle energy	12,290 ±640 keV
Neutron separation energy	4,472 ±500 keV
β⁻ decay energy	9,850 ±500 keV
β⁻ decay energy with neutron	6,218 ±447 keV

Point at nuclide Decay chain of Lanthanum-155

156LaLanthanum-156

Classification	z: 57; n: 99; m: 156
Half life	84 ±78 ms
Natural abundance	synthetic nuclide
Spin/parity	(4+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	2017
Mass excess	-33,050 ±400 keV
Binding energy	7,997 ±3 keV
Neutron separation energy	3,191 ±565 keV
β⁻ decay energy	11,760 ±500 keV
β⁻ decay energy with neutron	6,658 ±500 keV

Point at nuclide Decay chain of Lanthanum-156

157LaLanthanum-157

Classification	z: 57; n: 100; m: 157
Half life	stable nuclide
Natural abundance	synthetic nuclide
Discovery	2018
Mass excess	-29,070 ±300 keV
Binding energy	7,972 ±2 keV
Neutron separation energy	4,091 ±500 keV
β⁻ decay energy	10,860 ±500 keV
β⁻ decay energy with neutron	7,678 ±424 keV

Point at nuclide

Isotopes of Lanthanum

117LaLanthanum-117ads_clickcall_splitdownload

120LaLanthanum-120ads_clickcall_splitdownload

121LaLanthanum-121ads_clickcall_splitdownload

122LaLanthanum-122ads_clickcall_splitdownload

123LaLanthanum-123ads_clickcall_splitdownload

124LaLanthanum-124ads_clickcall_splitdownload

125LaLanthanum-125ads_clickcall_splitdownload

126LaLanthanum-126ads_clickcall_splitdownload

127LaLanthanum-127ads_clickcall_splitdownload

128LaLanthanum-128ads_clickcall_splitdownload

129LaLanthanum-129ads_clickcall_splitdownload

130LaLanthanum-130ads_clickcall_splitdownload

131LaLanthanum-131ads_clickcall_splitdownload

132LaLanthanum-132ads_clickcall_splitdownload

133LaLanthanum-133ads_clickcall_splitdownload

134LaLanthanum-134ads_clickcall_splitdownload

135LaLanthanum-135ads_clickcall_splitdownload

136LaLanthanum-136ads_clickcall_splitdownload

137LaLanthanum-137ads_clickcall_splitdownload

138LaLanthanum-138ads_clickcall_splitdownload

139LaLanthanum-139ads_clickdownload

140LaLanthanum-140ads_clickcall_splitdownload

141LaLanthanum-141ads_clickcall_splitdownload

142LaLanthanum-142ads_clickcall_splitdownload

143LaLanthanum-143ads_clickcall_splitdownload

144LaLanthanum-144ads_clickcall_splitdownload

145LaLanthanum-145ads_clickcall_splitdownload

146LaLanthanum-146ads_clickcall_splitdownload

147LaLanthanum-147ads_clickcall_splitdownload

148LaLanthanum-148ads_clickcall_splitdownload

149LaLanthanum-149ads_clickcall_splitdownload

150LaLanthanum-150ads_clickcall_splitdownload

151LaLanthanum-151ads_clickcall_splitdownload

152LaLanthanum-152ads_clickcall_splitdownload

153LaLanthanum-153ads_clickcall_splitdownload

154LaLanthanum-154ads_clickcall_splitdownload

155LaLanthanum-155ads_clickcall_splitdownload

156LaLanthanum-156ads_clickcall_splitdownload

157LaLanthanum-157ads_clickdownload

117LaLanthanum-117

120LaLanthanum-120

121LaLanthanum-121

122LaLanthanum-122

123LaLanthanum-123

124LaLanthanum-124

125LaLanthanum-125

126LaLanthanum-126

127LaLanthanum-127

128LaLanthanum-128

129LaLanthanum-129

130LaLanthanum-130

131LaLanthanum-131

132LaLanthanum-132

133LaLanthanum-133

134LaLanthanum-134

135LaLanthanum-135

136LaLanthanum-136

137LaLanthanum-137

138LaLanthanum-138

139LaLanthanum-139

140LaLanthanum-140

141LaLanthanum-141

142LaLanthanum-142

143LaLanthanum-143

144LaLanthanum-144

145LaLanthanum-145

146LaLanthanum-146

147LaLanthanum-147

148LaLanthanum-148

149LaLanthanum-149

150LaLanthanum-150

151LaLanthanum-151

152LaLanthanum-152

153LaLanthanum-153

154LaLanthanum-154

155LaLanthanum-155

156LaLanthanum-156

157LaLanthanum-157