Mendeleev's Periodic Table > Zr - Zirconium

Zr - Zirconium

Zirconium is a flamable metal and is not found as a metalic ore in nature. The metal has a unique property of being transparant to neutrons. Combined with it's high strength and corrosion resistance, hafnium free zirconium ideal for the nuclear power industry for use in reactor support structures and fuel rods to hold the fuel pellets as it does not impede the reaction. Zirconium was discovered in 1789 by Martin Klaproth working in Berlin and the pure metal obtained by Berzelius in 1824 in Stockholm.

Atomic number   40 Density g/mL 6 .49
Atomic weight u 91 .22 Melting point K 2125  
Bonding radius A 1 .45 Boiling point K 4682  
Atomic radius A 2 .16 Heat of vaporization kJ/mol 590 .88
Ionization Potential V 7 .576 Heat of fusion kJ/mol 11 .3
Electronegativity   1 .93 Specific heat J/gK 0 .235
The oxide is amphoteric. Crystal are face centered cubic.
Electron config. : [Kr] 4d10 5s1

Isotopes of Zr (Zirconium):

MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 081
15 sec
EC/ECp,7.200
Y-81/Sr-80
80.936768 		082
32 sec
EC,4.000 MeV
Y-82
81.931078 		083
44 sec
EC/ECp,5.870
Y-83/Sr-82
82.928652 		084
25.9 min
EC,2.670 MeV
Y-84
83.923252
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 085
7.86 min
EC,4.690 MeV
Y-85
84.921470 		086
16.5 hr
EC,1.470 MeV
Y-86
85.916467 		087
1.68 hr
EC,3.665 MeV
Y-87
86.914815 		088
83.4 da
EC,3.623 MeV
Y-88
87.910224
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 089
78.41 hr
EC,2.832 MeV
Y-89
88.908889 		090 51.45%

Stable

89.904702 		091 11.22%

Stable

90.905643 		092 17.15%

Stable

91.905038
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 093
1.53E+6 yr
B-,2.893 MeV
Nb-93
92.906475 		094 17.38%

Stable

93.906314 		095
64.02 da
B-,1.125 MeV
Nb-95
94.908042 		096 2.80%
3.9E19 yr
2B-,3.350 MeV
Mo-96
95.908275
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 097
16.90 hr
B-,2.658 MeV
Nb-97
96.910949 		098
30.7 sec
B-,2.261 MeV
Nb-98
97.912757 		099
2.1 sec
B-,4.558 MeV
Nb-99
98.916509 		100
7.1 sec
B-,3.340 MeV
Nb-100
99.917755
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 101
2.1 sec
B-,5.490 MeV
Nb-101
100.92113 		102
2.9 sec
B-,4.610 MeV
Nb-102
101.92298 		103
1.3 sec
B-,6.950 MeV
Nb-103
102.92659 		104
1.2 sec
B-,5.900 MeV
Nb-104
103.92882
MASS abundancy
Halflife
Particle, Energy
Decay Product(s)
Isotopic Mass		 105
1 sec
B-,8.500 MeV
Nb-105
104.93301