Among CaH2, BeH2, and BaH2, the order of ionic character is:
A
BeH2< BaH2 < CaH2
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B
CaH2< BeH2 < BaH2
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C
BeH2< CaH2 < BaH2
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D
BaH2< BeH2 < CaH2
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Solution
The correct option is CBeH2< CaH2 < BaH2 For 2nd group hydrides, on moving down the group metallic character of metals increases so the ionic character of metal hydride increases. Hence option (c) should be the correct option.