Question

What is the valency of Barium??

Answer 1

valency of Barium is +2

Answer 2

Barium has a theoretical valency of 2, and it actually has this valency in BaCl2 and BaSO4. Barium has 2 e-s in its outer shell., with atomic no. of 56. So the outer most shell contains 2 e-s and these e-s are ready to be lost. Hence the valence of Ba is 2 forming the highly reactive Ba2+.

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