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Question : 7
Total: 12
The elements 4 Be , 12 Mg and 20 Ca , each having two valence electrons in their valence shells, are in periods 2,3 and 4 respectively of the modern periodic table. Answer the following questions associated with these elements, giving reason in each case :
(a) In which group should they be ?
(b) Which one of them is least reactive?
(c) Which one of them has the largest atomic size?
(a) In which group should they be ?
(b) Which one of them is least reactive?
(c) Which one of them has the largest atomic size?
Solution:
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