HomeTable of NuclidesCarbonIsotopes

Isotopes of Carbon

List of known isotopes of the element Carbon.

Isotope	t½	%	Spin/parity	Radius	Isotopic mass	Discovery
⁸C	130 ±50 keV	syn.	0+	—	8.037·10⁶ ±19.58 keV/c²	1974
⁹C	126.5 ±10 ms	syn.	3/2-	—	9.031·10⁶ ±2.293 keV/c²	1964
¹⁰C	19.29 ±12 s	syn.	0+	—	1.001·10⁷ ±0.075 keV/c²	1949
¹¹C	20.36 ±14 m	syn.	3/2-	—	1.101·10⁷ ±0.064 keV/c²	1934
¹²C	stab.	98.94 ±0.06 %	0+	2.47 ±0.0022 fm	1.2·10⁷ keV/c²	1919
¹³C	stab.	1.06 ±0.06 %	1/2-	2.461 ±0.0034 fm	1.3·10⁷ ±2.5·10^-4 keV/c²	1929
¹⁴C	5,700 ±30 a	syn.	0+	2.502 ±0.0087 fm	1.4·10⁷ ±0.00403 keV/c²	1936
¹⁵C	2.449 ±5 s	syn.	1/2+	—	1.501·10⁷ ±0.858 keV/c²	1950
¹⁶C	0.747 ±8 s	syn.	0+	—	1.601·10⁷ ±3.84 keV/c²	1961
¹⁷C	193 ±6 ms	syn.	3/2+	—	1.702·10⁷ ±18.64 keV/c²	1968
¹⁸C	92 ±2 ms	syn.	0+	—	1.802·10⁷ ±32.2 keV/c²	1969
¹⁹C	46.3 ±40 ms	syn.	(1/2+)	—	1.903·10⁷ ±105.6 keV/c²	1974
²⁰C	16.3 ± ms	syn.	0+	—	2.004·10⁷ ±247.5 keV/c²	1981
²²C	6.1 ± ms	syn.	0+	—	2.205·10⁷ ±248.5 keV/c²	1986

8CCarbon-8

Classification	z: 6; n: 2; m: 8
Half life	130 ±50 keV
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	two-proton emission
Discovery	1974
Mass excess	35,060 ±18.24 keV
Binding energy	3,101 ±2.28 keV
Single-particle energy	-98.75 ±31.07 keV
Q value for electron capture	12,140 ±18.2 keV

Point at nuclide Decay chain of Carbon-8

9CCarbon-9

Classification	z: 6; n: 3; m: 9
Half life	126.5 ±10 ms
Natural abundance	synthetic nuclide
Spin/parity	3/2-
Decay modes	electron capture + β⁺ decay; β⁺ decay + proton emission; β⁺ decay + α decay
Discovery	1964
Mass excess	28,910 ±2.137 keV
Binding energy	4,337 ±0.2374 keV
Single-particle energy	1,299 ±2.359 keV
Neutron separation energy	14,220 ±18.36 keV
Q value for electron capture	16,490 ±2.32 keV
Magnetic dipole moment	1.391 ±5·10^-4 μN

Point at nuclide Decay chain of Carbon-9

10CCarbon-10

Classification	z: 6; n: 4; m: 10
Half life	19.29 ±12 s
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	electron capture + β⁺ decay
Discovery	1949
Mass excess	15,690 ±0.07 keV
Binding energy	6,032 ±0.007 keV
Single-particle energy	4,006 ±0.9054 keV
Neutron separation energy	21,280 ±2.137 keV
Q value for electron capture	3,648 ±0.072 keV
β⁻ decay energy	-23,110 ±400 keV

Point at nuclide Decay chain of Carbon-10

11CCarbon-11

Classification	z: 6; n: 5; m: 11
Half life	20.36 ±14 m
Natural abundance	synthetic nuclide
Spin/parity	3/2-
Decay modes	electron capture + β⁺ decay
Discovery	1934
Mass excess	10,640 ±0.06 keV
Binding energy	6,676 ±0.0054 keV
Single-particle energy	8,690 ±0.0615 keV
Neutron separation energy	13,120 ±0.0922 keV
Q value for electron capture	1,981 ±0.061 keV
β⁻ decay energy	-13,720 ±5 keV
β⁻ decay energy with neutron	-36,230 ±400 keV
Magnetic dipole moment	-0.964 ±0.001 μN
Electric quadrupole moment	0.0333 ±2·10^-4 b

Point at nuclide Decay chain of Carbon-11

12CCarbon-12

Classification	z: 6; n: 6; m: 12
Half life	stable nuclide
Natural abundance	98.94 ±0.06 %
Spin/parity	0+
Discovery	1919
Binding energy	7,680 ±2·10^-4 keV
Single-particle energy	15,950 ±0.0121 keV
Neutron separation energy	18,720 ±0.0596 keV
Q value for electron capture	-13,370 ±1.321 keV
β⁻ decay energy	-17,340 ±0.9999 keV
β⁻ decay energy with neutron	-32,440 ±5 keV
Electric quadrupole moment	0.06 ±0.03 b

Point at nuclide

13CCarbon-13

Classification	z: 6; n: 7; m: 13
Half life	stable nuclide
Natural abundance	1.06 ±0.06 %
Spin/parity	1/2-
Discovery	1929
Mass excess	3,125 ±2.3·10^-4 keV
Binding energy	7,469 ±2·10^-4 keV
Single-particle energy	17,530 ±1.321 keV
Neutron separation energy	4,946 ±5·10^-4 keV
Q value for electron capture	-13,440 ±1 keV
β⁻ decay energy	-2,221 ±0.2695 keV
β⁻ decay energy with neutron	-22,290 ±0.9999 keV
Magnetic dipole moment	0.7023 ±4·10^-6 μN

Point at nuclide

14CCarbon-14

Classification	z: 6; n: 8; m: 14
Half life	5,700 ±30 a
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay
Discovery	1936
Mass excess	3,019 ±0.00375 keV
Binding energy	7,520 ±4·10^-4 keV
Single-particle energy	20,830 ±1 keV
Neutron separation energy	8,176 ±0.0038 keV
Q value for electron capture	-20,650 ±21.21 keV
β⁻ decay energy	156.4 ±0.0037 keV
β⁻ decay energy with neutron	-10,400 ±0.2696 keV

Point at nuclide Decay chain of Carbon-14

15CCarbon-15

Classification	z: 6; n: 9; m: 15
Half life	2.449 ±5 s
Natural abundance	synthetic nuclide
Spin/parity	1/2+
Decay modes	β⁻ decay
Discovery	1950
Mass excess	9,873 ±0.8 keV
Binding energy	7,100 ±0.0533 keV
Single-particle energy	21,070 ±21.22 keV
Neutron separation energy	1,218 ±0.8 keV
Q value for electron capture	-19,090 ±21.04 keV
β⁻ decay energy	9,771 ±0.8 keV
β⁻ decay energy with neutron	-1,062 ±0.8 keV
Magnetic dipole moment	1.72 ±0.009 μN

Point at nuclide Decay chain of Carbon-15

16CCarbon-16

Classification	z: 6; n: 10; m: 16
Half life	0.747 ±8 s
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1961
Mass excess	13,690 ±3.578 keV
Binding energy	6,922 ±0.2236 keV
Single-particle energy	22,550 ±21.33 keV
Neutron separation energy	4,250 ±3.666 keV
Q value for electron capture	-23,420 ±24.82 keV
β⁻ decay energy	8,010 ±4.254 keV
β⁻ decay energy with neutron	5,521 ±3.577 keV

Point at nuclide Decay chain of Carbon-16

17CCarbon-17

Classification	z: 6; n: 11; m: 17
Half life	193 ±6 ms
Natural abundance	synthetic nuclide
Spin/parity	3/2+
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1968
Mass excess	21,030 ±17.36 keV
Binding energy	6,558 ±1.021 keV
Single-particle energy	23,360 ±30.08 keV
Neutron separation energy	733.5 ±17.72 keV
Q value for electron capture	-22,690 ±204.8 keV
β⁻ decay energy	13,160 ±22.94 keV
β⁻ decay energy with neutron	7,276 ±17.51 keV
Magnetic dipole moment	0.758 ±0.004 μN

Point at nuclide Decay chain of Carbon-17

18CCarbon-18

Classification	z: 6; n: 12; m: 18
Half life	92 ±2 ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission
Discovery	1969
Mass excess	24,910 ±30 keV
Binding energy	6,426 ±1.666 keV
Single-particle energy	26,080 ±206.2 keV
Neutron separation energy	4,183 ±34.66 keV
Q value for electron capture	-26,880 ±206.3 keV
β⁻ decay energy	11,800 ±35.28 keV
β⁻ decay energy with neutron	8,977 ±33.54 keV

Point at nuclide Decay chain of Carbon-18

19CCarbon-19

Classification	z: 6; n: 13; m: 19
Half life	46.3 ±40 ms
Natural abundance	synthetic nuclide
Spin/parity	(1/2+)
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1974
Mass excess	32,410 ±98.38 keV
Binding energy	6,118 ±5.178 keV
Single-particle energy	26,660 ±226.6 keV
Neutron separation energy	576.8 ±93.7 keV
Q value for electron capture	-27,360 ±534.4 keV
β⁻ decay energy	16,550 ±99.74 keV
β⁻ decay energy with neutron	11,220 ±100.1 keV

Point at nuclide Decay chain of Carbon-19

20CCarbon-20

Classification	z: 6; n: 14; m: 20
Half life	16.3 ± ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1981
Mass excess	37,500 ±230.6 keV
Binding energy	5,961 ±11.53 keV
Single-particle energy	29,550 ±573.7 keV
Neutron separation energy	2,981 ±250.7 keV
Q value for electron capture	-31,900 ±593 keV
β⁻ decay energy	15,730 ±243.7 keV
β⁻ decay energy with neutron	13,570 ±231.2 keV

Point at nuclide Decay chain of Carbon-20

22CCarbon-22

Classification	z: 6; n: 16; m: 22
Half life	6.1 ± ms
Natural abundance	synthetic nuclide
Spin/parity	0+
Decay modes	β⁻ decay; β⁻ decay with neutron emission; β⁻ decay with two-neutron emission
Discovery	1986
Mass excess	53,610 ±231.4 keV
Binding energy	5,421 ±10.52 keV
Single-particle energy	32,060 ±604.7 keV
Neutron separation energy	103 ±640 keV
β⁻ decay energy	21,840 ±311 keV
β⁻ decay energy with neutron	20,300 ±267.5 keV

Point at nuclide Decay chain of Carbon-22