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Chlorine-33

Properties and data of the isotope 33Cl.


Content

See also: list of Chlorine isotopes.

 

General data

Name of the isotope:Chlorine-33; Cl-33Symbol:33Cl or 3317ClMass number A:33 (= number of nucleons)Atomic number Z:17 (= number of protons)Neutrons N:16Isotopic mass:32.9774520(4) u (atomic weight of Chlorine-33)Nuclide mass:32.9681263 u (calculated nuclear mass without electrons)Mass excess:-21.00333 MeVMass defect:0.2942122 u (per nucleus)Nuclear binding energy:274.05689903 MeV (per nucleus)
8.30475452 MeV (average binding energy per nucleon)
Separation energy:SN = 1.57400(7) MeV (first neutron)
SP = 2.2768(4) MeV (first proton)
Half-life:2.511(4) sDecay constant λ:0.2760442774034 s-1Specific activity α:5.194929756571 × 10+21 Bq g-1
140403506934.35 Ci g-1
Spin and parity:
(nuclear angular momentum)
3/2+Magnetic dipole moment:μ(μN) = + 0.7547(3)Nuclear g-factor:gl = 0.50313333333333Mirror nucleus:Sulfur-33Year of discovery:1940

 

Radioactive Decay

Half-life T½ = 2.511(4) s.

Decay modeDaughterProbabilityDecay energyγ energy
(intensity)
EE/β+33S100 %5.58259 MeV

 

Parent Nuclides

Direct parent isotopes are: 33Ar, 35Ca.

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 16) and isobaric (same nucleon number A = 33) with Chlorine-33. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 16Isobar A = 33
521B
622C
723N
824O
925F
1026Ne33Ne
1127Na33Na
1228Mg33Mg
1329Al33Al
1430Si33Si
1531P33P
1632S33S
1733Cl33Cl
1834Ar33Ar
1935K33K
2036Ca
2137Sc
2238Ti

 

External data and identifiers

Adopted Levels, Gammas:NuDat 33Cl

 


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Last update: 2023-10-04


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