(1) What is the nature of bond between A and B.
(2) Suggest the formula of the compound between Aand B
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i) a bond between a metal and non metal is always ionic. So nature of bond is ionic or electrovalent.
ii) Since A loses 2 electrons, its valency is +2 and valency of B is -1 since it gains one electron. On interchanging them, we get the formula, which is AB2.
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