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