Chlorine-32

Properties and data of the isotope ³²Cl.

Contents

General data

Name of the isotope:Chlorine-32; Cl-32Symbol:³²Cl or 3217ClMass number A:32 (= number of nucleons)Atomic number Z:17 (= number of protons)Neutrons N:15Isotopic mass:31.9856846(6) u (atomic weight of Chlorine-32)Nuclide mass:31.9763589 u (calculated nuclear mass without electrons)Mass excess:-13.33471 MeVMass defect:0.277314684 u (per nucleus)Nuclear binding energy:258.31696426 MeV (per nucleus)
8.07240513 MeV (average binding energy per nucleon)Separation energy:S_N = 14.371(3) MeV (first neutron)
S_P = 1.5811(5) MeV (first proton)Half-life:298(1) msDecay constant λ:2.3259972502012 s^-1Specific activity α:4.518542929205 × 10⁺²² Bq g^-1
1221227818704.2 Ci g^-1Spin and parity:
(nuclear angular momentum)1+Magnetic dipole moment:μ(μ_N) = 1.115(6)Nuclear g-factor:g_l = 1.115Mirror nucleus:Phosphorus-32Year of discovery:1953

Radioactive Decay

Half-life T_½ = 298(1) ms respectively 2.98 × 10^-1 seconds s.

Decay mode	Daughter	Probability	Decay energy
EE/β⁺	³²S	99.92 %	12.6804 MeV
ε, p	³¹P	0.26 %	3.822 MeV
EE, α	²⁸Si	0.054 %	5,738 MeV

Parent Nuclides

Direct parent isotope is: ³²Ar.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 15) and isobaric (same nucleon number A = 32) with Chlorine-32. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

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