Polonium-214

Properties and data of the isotope ²¹⁴Po.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

See also: List of individual Polonium isotopes (and general data sources).

General data

Name of the isotope:Polonium-214; Po-214Other names:Radium CSymbol:²¹⁴Po or 21484PoMass number A:214 (= number of nucleons)Atomic number Z:84 (= number of protons)Neutrons N:130Isotopic mass:213.9952012(16) u (atomic weight of Polonium-214)Nuclide mass:213.9491259 u (calculated nuclear mass without electrons)Mass excess:-4.47005 MeVMass defect:1.788540568 u (per nucleus)Nuclear binding energy:1666.01480785 MeV (per nucleus)
7.78511592 MeV (average binding energy per nucleon)Separation energy:S_N = 5.8878(28) MeV (first neutron)
S_P = 6.527(5) MeV (first proton)Half-life:164.3(20) μsDecay constant λ:4218.7898999388 s^-1Specific activity α:1.19277685614 × 10⁺²⁵ Bq g^-1
3.22372123282 × 10⁺¹⁴ Ci g^-1Spin and parity:
(nuclear angular momentum)0+Year of discovery:1912

Radioactive Decay

Half-life T_½ = 164.3(20) μs respectively 1.643 × 10^-4 seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
α	²¹⁰Pb	100 %	7.83354(6) MeV

Parent Nuclides

Direct parent isotopes are: ²¹⁸Rn, ²¹⁴Bi.

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 130) and isobaric (same nucleon number A = 214) with Polonium-214. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 130	Isobar A = 214
78	²⁰⁸Pt
79	²⁰⁹Au
80	²¹⁰Hg	²¹⁴Hg
81	²¹¹Tl	²¹⁴Tl
82	²¹²Pb	²¹⁴Pb
83	²¹³Bi	²¹⁴Bi
84	²¹⁴Po	²¹⁴Po
85	²¹⁵At	²¹⁴At
86	²¹⁶Rn	²¹⁴Rn
87	²¹⁷Fr	²¹⁴Fr
88	²¹⁸Ra	²¹⁴Ra
89	²¹⁹Ac	²¹⁴Ac
90	²²⁰Th	²¹⁴Th
91	²²¹Pa	²¹⁴Pa
92	²²²U	²¹⁴U