Zirconium

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Zirconium
40Zr
Ti

Zr

Hf
yttriumzirconiumniobium
Ìhànsójú
silvery white
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà zirconium, Zr, 40
Ẹ̀ka ẹ́límẹ̀nti transition metal
Ẹgbẹ́, àsìkò, àdìpò 45, d
Ìwúwo átọ́mù 91.224
Ìtòléra ẹ̀lẹ́ktrónì [Kr] 5s2 4d2
2, 8, 18, 10, 2
Physical properties
Phase solid
Density (near r.t.) 6.52 g·cm−3
Liquid density at m.p. 5.8 g·cm−3
Melting point 2128 K, 1855 °C, 3371 °F
Boiling point 4682 K, 4409 °C, 7968 °F
Heat of fusion 14 kJ·mol−1
Heat of vaporization 573 kJ·mol−1
Molar heat capacity 25.36 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2639 2891 3197 3575 4053 4678
Atomic properties
Oxidation states 4, 3, 2, 1,[1]
(amphoteric oxide)
Electronegativity 1.33 (Pauling scale)
Ionization energies 1st: 640.1 kJ·mol−1
2nd: 1270 kJ·mol−1
3rd: 2218 kJ·mol−1
Atomic radius 160 pm
Covalent radius 175±7 pm
Miscellanea
Crystal structure hexagonal close-packed
Zirconium has a hexagonal close-packed crystal structure
Magnetic ordering paramagnetic[2]
Electrical resistivity (20 °C) 421 nΩ·m
Thermal conductivity 22.6 W·m−1·K−1
Thermal expansion (25 °C) 5.7 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 3800 m·s−1
Young's modulus 88 GPa
Shear modulus 33 GPa
Bulk modulus 91.1 GPa
Poisson ratio 0.34
Mohs hardness 5.0
Vickers hardness 903 MPa
Brinell hardness 650 MPa
CAS registry number 7440-67-7
Àwọn ísótòpù dídúró jùlọ
Main article: Àwọn ísótòpù zirconium
iso NA half-life DM DE (MeV) DP
88Zr syn 83.4 d ε - 88Y
γ 0.392D -
89Zr syn 78.4 h ε - 89Y
β+ 0.902 89Y
γ 0.909D -
90Zr 51.45% 90Zr is stable with 50 neutrons
91Zr 11.22% 91Zr is stable with 51 neutrons
92Zr 17.15% 92Zr is stable with 52 neutrons
93Zr trace 1.53×106 y β 0.060 93Nb
94Zr 17.38% 1.1×1017 y ββ - 94Mo
96Zr 2.8% 2.0×1019 y[3] ββ 3.348 96Mo
· r

Zirconium (pípè /zərˈkoʊniəm/ zər-KOH-ni-əm) je ipilese elegbogi pelu ami-idamo Zr ati nomba atomu 40.


Itokasi[àtúnṣe | àtúnṣe àmìọ̀rọ̀]

  1. "Zirconium: zirconium(I) fluoride compound data". OpenMOPAC.net. http://openmopac.net/data_normal/zirconium(i)%20fluoride_jmol.html. Retrieved 2007-12-10. 
  2. Magnetic susceptibility of the elements and inorganic compounds, in Handbook of Chemistry and Physics 81st edition, CRC press.
  3. Pritychenko, Boris; V. Tretyak. "Adopted Double Beta Decay Data". National Nuclear Data Center. http://www.nndc.bnl.gov/bbdecay/list.html. Retrieved 2008-02-11.