Chromium (Cr), element 24 – Learn Acer periodic table

Transition metal, atomic number 24.

Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in Group 6. It is a steely-gray, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.

Symbol Cr. Atomic mass 51.99616 u. Group 6, period 4. Electron configuration [Ar] 3d5 4s1. Electrons per shell 2, 8, 13, 1. State at room temperature: Solid. Melting point 1906.8 °C, boiling point 2670.8 °C. Discovered by Louis Nicolas Vauquelin.

Element data from Wikipedia, CC BY-SA 3.0.

Chromium (Cr), element 24 – Learn Acer periodic table

Chromium

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