How can we identify the number of group from electronic configration of any element if it ended in 3d^8 4S^2 I know group no. = total no. of valence but whats the valence here in this situation?
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Explanation:
This is an element for f block.
Valence Electronic configuration for d block is (n- 1) d 0 to 10 ns 0 to 2.
So here this belongs to period 4 and group 10.
Group no here is 10 since no of valence electron is no of electron in (n-1)d i.e. 8 + no of electron in ns i.e. 2
So 8+2 = 10
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