Zirconium-96

Properties and data of the isotope ⁹⁶Zr.

Contents

General Data

Radioactive Decay

Parent Nuclides

Isotones und Isobares

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

General data

Name of the isotope:Zirconium-96; Zr-96Symbol:⁹⁶Zr or 9640ZrMass number A:96 (= number of nucleons)Atomic number Z:40 (= number of protons)Neutrons N:56Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.4 (= neutron-proton ratio)Neutron excess (N-Z):16Isotopic mass:95.90827(2) u (atomic weight of Zirconium-96)Nuclide mass:95.8863278 u (calculated nuclear mass without electrons)Mass excess:-85.44594 MeVMass defect:0.88996657599999 u (per nucleus)Nuclear binding energy:828.99852574 MeV (per nucleus)
8.63540131 MeV (average binding energy per nucleon)Separation energy:S_N = 7.8502(9) MeV (first neutron)
S_P = 11.519(7) MeV (first proton)Half-life:2.0(4) × 10¹⁹ aDecay constant λ:1.098977645484 × 10^-27 s^-1Specific activity α:6.966524403188 × 10^-6 Bq g^-1
1.882844433294 × 10^-16 Ci g^-1Spin and parity:
(nuclear angular momentum)0+Charge radius:4.3512(15) femtometer fmYear of discovery:1934

Radioactive Decay

Half-life T_½ = 2.0(4) × 10¹⁹ a respectively 6.3072 × 10²⁶ seconds s.

Decay mode	Daughter	Probability	Decay energy	γ energy (intensity)
β^-, β^-	⁹⁶Mo		0.16397(10) MeV

Parent Nuclides

Direct parent isotope is: ⁹⁶Y.

Occurrence

Comparison of the natural Zirconium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Zirconium Isotopic mixture	91.222 u	100 %
Isotope ⁹⁰Zr	89.90470(2) u	51.45(4) %	stable	0+
Isotope ⁹²Zr	91.90503(2) u	17.15(3) %	stable	0+
Isotope ⁹⁴Zr	93.90631(2) u	17.38(4) %	stable	0+
Isotope ⁹⁶Zr	95.90827(2) u	2.80(2) %	2.0(4) × 10¹⁹ a	0+
Isotope ⁹¹Zr	90.90564021(10) u	11.22(5) %	stable	5/2+

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 56) and isobaric (same nucleon number A = 96) with Zirconium-96. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 56	Isobar A = 96
31	⁸⁷Ga
32	⁸⁸Ge
33	⁸⁹As
34	⁹⁰Se
35	⁹¹Br	⁹⁶Br
36	⁹²Kr	⁹⁶Kr
37	⁹³Rb	⁹⁶Rb
38	⁹⁴Sr	⁹⁶Sr
39	⁹⁵Y	⁹⁶Y
40	⁹⁶Zr	⁹⁶Zr
41	⁹⁷Nb	⁹⁶Nb
42	⁹⁸Mo	⁹⁶Mo
43	⁹⁹Tc	⁹⁶Tc
44	¹⁰⁰Ru	⁹⁶Ru
45	¹⁰¹Rh	⁹⁶Rh
46	¹⁰²Pd	⁹⁶Pd
47	¹⁰³Ag	⁹⁶Ag
48	¹⁰⁴Cd	⁹⁶Cd
49	¹⁰⁵In	⁹⁶In
50	¹⁰⁶Sn
51	¹⁰⁷Sb
52	¹⁰⁸Te
53	¹⁰⁹I
54	¹¹⁰Xe