HomeTable of NuclidesBerylliumIsotopes

Isotopes of Beryllium

List of known isotopes of the element Beryllium.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
⁶Be	92 ±6 keV	syn.	0+	—	6.019·10⁶ ±5.848 keV/c²	1958
⁷Be	53.22 ±6 d	syn.	3/2-	2.646 ±0.016 fm	7.016·10⁶ ±0.076 keV/c²	1938
⁸Be	5.57 ±25 eV	syn.	0+	—	8.005·10⁶ ±0.037 keV/c²	1932
⁹Be	stab.	100 %	3/2-	2.519 ±0.012 fm	9.012·10⁶ ±0.082 keV/c²	1921
¹⁰Be	1.51·10⁶ ±4 a	syn.	0+	2.355 ±0.017 fm	1.001·10⁷ ±0.086 keV/c²	1935
¹¹Be	13.76 ±7 s	syn.	1/2+	2.463 ±0.015 fm	1.102·10⁷ ±0.255 keV/c²	1958
¹²Be	21.46 ±5 ms	syn.	0+	—	1.202·10⁷ ±2.048 keV/c²	1966
¹³Be	2.699·10^-21 ±18 s	syn.	(1/2-)	—	1.303·10⁷ ±10.92 keV/c²	1983
¹⁴Be	4.35 ±17 ms	syn.	—	—	1.404·10⁷ ±141.9 keV/c²	1973
¹⁵Be	0.58 ±20 MeV	syn.	(5/2+)	—	1.505·10⁷ ±177.9 keV/c²	2013
¹⁶Be	0.8 ±2 MeV	syn.	0+	—	1.606·10⁷ ±177.9 keV/c²	2012

6BeBeryllium-6

Classification	z: 4; n: 2; m: 6
Half life	92 ±6 keV
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	α decay; two-proton emission
Discovery	1958
Mass excess	18,370 ±5.448 keV
Binding energy	4,487 ±0.908 keV
Single-particle energy	592.8 ±50.29 keV
Neutron separation energy	26,830 ±2,003 keV
Q value for electron capture	4,288 ±5.448 keV
β⁻ decay energy	-28,950 ±2,003 keV

Point at nuclide Decay chain of Beryllium-6

7BeBeryllium-7

Classification	z: 4; n: 3; m: 7
Half life	53.22 ±6 d
Natural abundance	synthetic nuclide
Spin/parity	3/2-
Decay modes	electron capture (EC)
Discovery	1938
Mass excess	15,760 ±0.071 keV
Binding energy	5,371 ±0.0101 keV
Single-particle energy	5,606 ±0.0709 keV
Neutron separation energy	10,670 ±5.448 keV
Q value for electron capture	861.8 ±0.071 keV
β⁻ decay energy	-11,910 ±25.15 keV
β⁻ decay energy with neutron	-39,630 ±2,003 keV
Magnetic dipole moment	-1.4 ±4·10^-6 μN

Point at nuclide Decay chain of Beryllium-7

8BeBeryllium-8

Classification	z: 4; n: 4; m: 8
Half life	5.57 ±25 eV
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	α decay
Discovery	1932
Mass excess	4,941 ±0.035 keV
Binding energy	7,062 ±0.0044 keV
Single-particle energy	17,250 ±0.0356 keV
Neutron separation energy	18,890 ±0.0792 keV
Q value for electron capture	-16,010 ±0.059 keV
β⁻ decay energy	-17,980 ±1 keV
β⁻ decay energy with neutron	-30,810 ±25.15 keV

Point at nuclide Decay chain of Beryllium-8

9BeBeryllium-9

Classification	z: 4; n: 5; m: 9
Half life	stable nuclide
Natural abundance	100 %
Spin/parity	3/2-
Discovery	1921
Mass excess	11,340 ±0.076 keV
Binding energy	6,462 ±0.0085 keV
Single-particle energy	16,880 ±0.0898 keV
Neutron separation energy	1,664 ±0.0843 keV
Q value for electron capture	-13,610 ±0.201 keV
β⁻ decay energy	-1,069 ±0.8994 keV
β⁻ decay energy with neutron	-19,650 ±1.002 keV
Magnetic dipole moment	-1.178 ±5·10^-6 μN
Electric quadrupole moment	0.0529 ±4·10^-4 b

Point at nuclide

10BeBeryllium-10

Classification	z: 4; n: 6; m: 10
Half life	1.51·10⁶ ±4 a
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay
Discovery	1935
Mass excess	12,600 ±0.081 keV
Binding energy	6,497 ±0.0081 keV
Single-particle energy	19,630 ±0.2031 keV
Neutron separation energy	6,812 ±0.0519 keV
Q value for electron capture	-20,450 ±12.72 keV
β⁻ decay energy	556.8 ±0.0822 keV
β⁻ decay energy with neutron	-7,881 ±0.9009 keV

Point at nuclide Decay chain of Beryllium-10

11BeBeryllium-11

Classification	z: 4; n: 7; m: 11
Half life	13.76 ±7 s
Natural abundance	synthetic nuclide
Spin/parity	1/2+
Decay modes	β⁻ decay; β⁻ + α decay; β⁻ decay with proton emission
Discovery	1958
Mass excess	20,170 ±0.238 keV
Binding energy	5,952 ±0.0216 keV
Single-particle energy	20,160 ±12.72 keV
Neutron separation energy	501.6 ±0.2511 keV
Q value for electron capture	-20,560 ±0.65 keV
β⁻ decay energy	11,500 ±0.238 keV
β⁻ decay energy with neutron	55.24 ±0.2382 keV
Magnetic dipole moment	-1.682 ±8·10^-4 μN

Point at nuclide Decay chain of Beryllium-11

12BeBeryllium-12

Classification	z: 4; n: 8; m: 12
Half life	21.46 ±5 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1966
Mass excess	25,070 ±1.909 keV
Binding energy	5,720 ±0.159 keV
Single-particle energy	22,930 ±2.005 keV
Neutron separation energy	3,170 ±1.923 keV
Q value for electron capture	-23,940 ±30.06 keV
β⁻ decay energy	11,700 ±2.321 keV
β⁻ decay energy with neutron	8,338 ±1.908 keV

Point at nuclide Decay chain of Beryllium-12

13BeBeryllium-13

Classification	z: 4; n: 9; m: 13
Half life	2.699·10^-21 ±18 s
Natural abundance	synthetic nuclide
Spin/parity	(1/2-)
Decay modes	neutron emission
Discovery	1983
Mass excess	33,650 ±10.18 keV
Binding energy	5,241 ±0.7831 keV
Single-particle energy	22,630 ±31.68 keV
Neutron separation energy	-510 ±10 keV
Q value for electron capture	-23,330 ±70.73 keV
β⁻ decay energy	17,090 ±10.22 keV
β⁻ decay energy with neutron	12,210 ±10.26 keV

Point at nuclide Decay chain of Beryllium-13

14BeBeryllium-14

Classification	z: 4; n: 10; m: 14
Half life	4.35 ±17 ms
Natural abundance	synthetic nuclide
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1973
Mass excess	39,950 ±132.2 keV
Binding energy	4,993 ±9.446 keV
Single-particle energy	24,310 ±149.6 keV
Neutron separation energy	1,775 ±132.6 keV
β⁻ decay energy	16,290 ±133.9 keV
β⁻ decay energy with neutron	15,320 ±132.2 keV

Point at nuclide Decay chain of Beryllium-14

15BeBeryllium-15

Classification	z: 4; n: 11; m: 15
Half life	0.58 ±20 MeV
Natural abundance	synthetic nuclide
Spin/parity	(5/2+)
Decay modes	neutron emission
Discovery	2013
Mass excess	49,820 ±165.7 keV
Binding energy	4,540 ±11.05 keV
Neutron separation energy	-1,800 ±100 keV
β⁻ decay energy	20,860 ±167.1 keV
β⁻ decay energy with neutron	18,090 ±167.1 keV

Point at nuclide Decay chain of Beryllium-15

16BeBeryllium-16

Classification	z: 4; n: 12; m: 16
Half life	0.8 ±2 MeV
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	neutron emission
Discovery	2012
Mass excess	57,440 ±165.7 keV
Binding energy	4,285 ±10.36 keV
Neutron separation energy	450 ±141.4 keV
β⁻ decay energy	20,330 ±167.6 keV
β⁻ decay energy with neutron	20,410 ±167.1 keV

Point at nuclide Decay chain of Beryllium-16