Nitrogen-23

Properties and data of the isotope ²³N.

Content

General data

Name of the isotope:Nitrogen-23; N-23Symbol:²³N or 237NMass number A:23 (= number of nucleons)Atomic number Z:7 (= number of protons)Neutrons N:16Isotopic mass:23.03942(45) u (atomic weight of Nitrogen-23)Nuclide mass:23.03558 u (calculated nuclear mass without electrons)Mass excess:36.71949 MeVMass defect:0.15399388 u (per nucleus)Nuclear binding energy:143.44437526 MeV (per nucleus)
6.23671197 MeV (average binding energy per nucleon)Separation energy:S_N = 3.12(47) MeV (first neutron)
S_P = 24.28(48) MeV (first proton)Half-life:14.1(15) msDecay constant λ:49.159374507798 s^-1Specific activity α:1.28715077335 × 10⁺²⁴ Bq g^-1
34787858739405 Ci g^-1Spin and parity:
(nuclear angular momentum)1/2-Year of discovery:1985

Radioactive Decay

Half-life T_½ = 14.1(15) ms respectively 1.41 × 10^-2 seconds s.

Decay mode	Daughter	Probability	Decay energy
β^-	²³O	46.6 %	22.10(44) MeV
β^-, n	²²O	42 %	19.37(42) MeV
β^-, 2n	²¹O	8 %
β^-, 3n	²⁰O	< 3.4 %

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 16) and isobaric (same nucleon number A = 23) with Nitrogen-23. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 16	Isobar A = 23
5	²¹B
6	²²C
7	²³N	²³N
8	²⁴O	²³O
9	²⁵F	²³F
10	²⁶Ne	²³Ne
11	²⁷Na	²³Na
12	²⁸Mg	²³Mg
13	²⁹Al	²³Al
14	³⁰Si	²³Si
15	³¹P
16	³²S
17	³³Cl
18	³⁴Ar
19	³⁵K
20	³⁶Ca
21	³⁷Sc
22	³⁸Ti