Name:  Calcium

Atomic Symbol and Mass Number: Ca [20]

Electron Configurations of the Element: [Ar] 4S

Atomic Radii: 231 pm

Electron Affinity: 0

Oxidation States: +2, +1

Electronegativity value: 1.00

Elemental Group: Alkaline Earth Metal

Uses and properties:

• Calcium is reactive. It reacts easily with acid and water. It also reacts with air producing calcium oxide and calcium nitride.

• Calcium is a soft metal.

• Calcium reacts easily with water and acids and the metal burns brightly in air, forming mainly the nitride

• Calcium forms alloys with aluminum, beryllium, copper, lead, and magnesium

• Used in the manufacture of other metals such as uranium and thorium

• Used to remove oxygen, sulfur and carbon from alloys

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Lewis diagram: