Zirconium

Zirconium
40Zr
Ti ↑ Zr ↓ Hf Tábìlì ìdásìkò yttrium ← zirconium → niobium
Ìhànsójú
silvery white
Àwọn ìdámọ́ wíwọ́pọ̀
Orúkọ, àmì-ìdámọ́, nọ́mbà	zirconium, Zr, 40
Ẹ̀ka ẹ́límẹ̀nti	transition metal
Ẹgbẹ́, àsìkò, àdìpò	4, 5, 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, (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
Magnetic ordering	paramagnetic
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 β−β− - 94Mo 96Zr 2.8% 2.0×1019 y β−β− 3.348 96Mo

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