Element Zirconium (Zr)

Atomic number 40 · transition metal · Atomic mass 91.224 u

Atomic Mass
91.2240 u
Element Properties
Atomic Number 40
Atomic Mass 91.2240 u
Category transition metal / 过渡金属
Group 4
Period 5
Block D
Electron Configuration [Kr] 4d² 5s²
Electronegativity (Pauling) 1.33
Phase at STP Solid
Density 6.52 g/cm³
Year Discovered 1789

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