Cirkonyo

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Zirconium
40Zr
Ti

Zr

Hf
Hydrogen (other non-metal)
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Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
yttriumzirconiumniobium
Panagway
silvery white
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan zirconium, Zr, 40
Paglitok /zərˈkniəm/ [[Help:Pronunciation respelling key|zər-Plantilya:Smallcaps all-ni-əm]]
Kategoriyang elemento puthaw nga transisyon
Group, period, block 45, d
Gibug-aton sa atomo 91.224
Kontorno sa elektron [Kr] 5s2 4d2
2, 8, 18, 10, 2
Electron shells of zirconium (2, 8, 18, 10, 2)
Electron shells of zirconium (2, 8, 18, 10, 2)
History
Pagkadiskobre Martin Heinrich Klaproth (1789)
First isolation Jöns Jakob Berzelius (1824)
Physical properties
Phase magahi
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
Most stable isotopes
Main article: Isotopes of 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 1.144 94Mo
96Zr 2.8% 2.0×1019 y[3] ββ 3.348 96Mo
· r

Ang cirkonyo (Iningles zirconium) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Zr ug kaiphan nga atomik 40. Ang cirkonyo mao ang puthaw nga transisyon.

Ang mga gi basihan niini[usba | usba ang wikitext]

  1. "Zirconium: zirconium(I) fluoride compound data". OpenMOPAC.net. 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. "Adopted Double Beta Decay Data". National Nuclear Data Center. Retrieved 2008-02-11. {{cite web}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)


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