How did environmental factors affect food production? in the boy who harnessed the wind
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Explanation:
General electronic configuration for the given groups are as follows.
For 4A(14) :
This means that there are 4 unpaired electrons in group 4A(14).
For 7A(17) :
So, there are 7 unpaired electrons present in group 7A(17).
For 1A(1) :
Hence, there is only one unpaired electron present in group 1A(1).
For 6A(16) :
So, there are 6 unpaired electrons present in group 6A(16).