Isotopes of nitrogen
List of isotopes
Bold for stable isotopes. Immediately decays into two alpha particles for a net reaction of ¹²N → 3 ⁴He + e⁺.

Isotopes of nitrogen

Section Title: List of isotopes
Table Section Text: Bold for stable isotopes. Immediately decays into two alpha particles for a net reaction of ¹²N → 3 ⁴He + e⁺.

nuclide symbol	Z(p)	N(n)	isotopic mass (u)	half-life	decay mode(s)	daughter isotope(s)	nuclear spin and parity	representative isotopic composition (mole fraction)	range of natural variation (mole fraction)

excitation energy

10N	7	3	10.04165(43)	200(140)×10−24 s [2.3(16) MeV]	p	9 C	(2−)

11N	7	4	11.02609(5)	550(20)×10−24 s [1.58(+75−52) MeV]	p	10 C	1/2+

11mN	740(60) keV	690(80)×10−24 s	1/2−

12N	7	5	12.0186132(11)	11.000(16) ms	β+ (96.5%)	12 C	1+

β+, α (3.5%)	8 Be

13N	7	6	13.00573861(29)	9.965(4) min	β+	13 C	1/2−

14N	7	7	14.00307400446(21)	Stable	1+	0.99636(20)	0.99579–0.99654

15N	7	8	15.0001088989(6)	Stable	1/2−	0.00364(20)	0.00346–0.00421

16N	7	9	16.0061019(25)	7.13(2) s	β− (99.99855%)	16 O	2−

β−, α (.00145%)	12 C

16mN	120.42(12) keV	5.25(6) µs	IT (99.9996%)	16 N	0−

β− (0.0004%)	16 O

17N	7	10	17.008449(16)	4.173(4) s	β−, n (95.0%)	16 O	1/2−

β− (4.9975%)	17 O

β−, α (.0025%)	13 C

18N	7	11	18.014078(20)	619.2(19) ms	β− (80.8%)	18 O	1−

β−, α (12.2%)	14 C

β−, n (7.0%)	17 O

19N	7	12	19.017022(18)	336(3) ms	β− (58.2%)	19 O	(1/2−)

β−, n (41.8%)	18 O

20N	7	13	20.02337(8)	136(3) ms	β− (57.1%)	20O

β−, n (42.9%)	19O

21N	7	14	21.02709(14)	84(7) ms	β−, n (90.5%)	20O	(1/2−)

β− (9.5%)	21O

22N	7	15	22.03410(22)	23(3) ms	β− (54%)	22O	0-#

β−, n (34%)	21O

β−, 2n (12%)	20O

23N	7	16	23.03942(45)	13.9(14) ms [14.1(+12−15) ms]	β− (50%)	23O	1/2−#

β−, n (42%)	22O

β−, 2n (8%)	21O

24N	7	17	24.05039(43)#	<52 ns	n	23N

25N	7	18	25.06010(54)#	<260 ns	1/2−#

Sentence(s)

All of these radioisotopes are short-lived, with the longest-lived one being nitrogen-13 with a half-life of 9.965 minutes.

final_sentence: All of these radioisotopes are short-lived, with the longest-lived one being nitrogen-13 with a half-life of 9.965 minutes.