An element belongs to group II. What would be its valency ? Write the formulae of molecules of compounds it will form with elements in VA, VIA and VII A groups.
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if the element is present in group 2 then it it has the valency of plus two search latest take an example calcium example of calcium it has and valency of plus to show first between react with an element of 5th group such as such as nitrogen which has valency of the because it has valence electrons of 5 so when it will form calcium it will see a 3 and 2 and when it will be formed with 16 group elements such as oxygen then it will formed because CA + 2 and minus 2 full form CA and if we take an example of 7 and group such as chlorine then it will form cacl2
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