40 Zr 91.224
Zirconium
transition metal
Properties
- Atomic number
- 40
- Atomic mass
- 91.224 u
- Category
- transition metal
- Group
- 4
- Period
- 5
- Block
- d-block
- State (room temp)
- Solid
- Outer-shell electrons
- 2
- Electronegativity
- 1.33 (Pauling)
- Density
- 6.52 g/cm³
- Melting point
- 1854.85 °C
- Boiling point
- 4376.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d²
Noble-gas shorthand: [Kr] 4d² 5s²
Electrons per shell: 2, 8, 18, 10, 2 — that's 2 in the outermost shell.
About Zirconium
Zirconium is a chemical element with symbol Zr and atomic number 40. The name of zirconium is taken from the name of the mineral zircon, the most important source of zirconium. The word zircon comes from the Persian word zargun زرگون, meaning "gold-colored".
- Discovered by Martin Heinrich Klaproth
- Appearance: silvery white
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.