Phosphorus-46

Properties and data of the isotope ⁴⁶P.

Content

General data

Name of the isotope:Phosphorus-46; P-46Symbol:⁴⁶P or 4615PMass number A:46 (= number of nucleons)Atomic number Z:15 (= number of protons)Neutrons N:31Isotopic mass:46.02466(75) u (atomic weight of Phosphorus-46)Nuclide mass:46.0164314 u (calculated nuclear mass without electrons)Mass excess:22.97064 MeVMass defect:0.361327876 u (per nucleus)Nuclear binding energy:336.57474853 MeV (per nucleus)
7.31684236 MeV (average binding energy per nucleon)Separation energy:S_N = 0.70(6) MeV (first neutron)
S_P = 21.81(99) MeV (first proton)Half-life:Spin and parity:
(nuclear angular momentum)Year of discovery:1990

Radioactive Decay

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-	⁴⁶S	100 %	22.63(86) MeV

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 31) and isobaric (same nucleon number A = 46) with Phosphorus-46. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

OZ	Isotone N = 31	Isobar A = 46
15	⁴⁶P	⁴⁶P
16	⁴⁷S	⁴⁶S
17	⁴⁸Cl	⁴⁶Cl
18	⁴⁹Ar	⁴⁶Ar
19	⁵⁰K	⁴⁶K
20	⁵¹Ca	⁴⁶Ca
21	⁵²Sc	⁴⁶Sc
22	⁵³Ti	⁴⁶Ti
23	⁵⁴V	⁴⁶V
24	⁵⁵Cr	⁴⁶Cr
25	⁵⁶Mn	⁴⁶Mn
26	⁵⁷Fe	⁴⁶Fe
27	⁵⁸Co	⁴⁶Co
28	⁵⁹Ni
29	⁶⁰Cu
30	⁶¹Zn
31	⁶²Ga
32	⁶³Ge
33	⁶⁴As
34	⁶⁵Se
35	⁶⁶Br
36	⁶⁷Kr