barium electronic configuration is (2,8,8,8,8,8,8,6) if this is right then why barium valency is +2? barium valency should be -2 but why it is not -2?
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Answer:
it will be +2
Explanation:
bariums electronic configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2
or it is 2,8,18,18,8,2. it will lose two electrons two achieve the octet rule. As it loses two electrons, it become +2 charged and hence it's valency is +2
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