(i) How is the valency of an element determined if its electronic configuration is known? (ii) How would the tendency to lose electrons change as you go-(a) left to right in a period (b) down a group?
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Explanation:
suppose if we take nitrogen.(N) element number 7.
then we find its valency,
The outer most orbital consisting electrons is known as the valency of an orbital.
so the valency of nitrogen is 5
because the outer most orbital consisting 5 electrons.
electronic configuration =2,5
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