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Atomic Number: 40
Zr
Zr

Zirconium

91.2240 u

Category

transition metal

State at Room Temperature

solid

Electron Configuration

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d²

Valence Electrons

2

Lewis Dot:••

Electronegativity

1.33

Pauling scale

Oxidation States

+4

Melting Point

2128 K

1854.85°C

Boiling Point

4650 K

4376.85°C

Density

6.52

g/cm³

Position in Table

Group 4Period 5d-block

Discovery

Historical Information

Discovered byMartin Heinrich Klaproth
Year1789

Common Uses

Applications & Industries

Nuclear reactors, alloys, ceramics, jewelry

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