Zirconium (Zr), element 40 – Learn Acer periodic table

Transition metal, atomic number 40.

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".

Symbol Zr. Atomic mass 91.2242 u. Group 4, period 5. Electron configuration [Kr] 4d2 5s2. Electrons per shell 2, 8, 18, 10, 2. State at room temperature: Solid. Melting point 1854.8 °C, boiling point 4376.9 °C. Discovered by Martin Heinrich Klaproth.

Element data from Wikipedia, CC BY-SA 3.0.

Zirconium (Zr), element 40 – Learn Acer periodic table

Zirconium

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