Ans is option c.
Why not option d?!

Ans is option c. Why not option d?! Considering the elements B, C, N, F, and Si, the correct ordér of their non-metallic character is :

Boron is a p block element & is present in 13th group & 2nd period, carbon is a p block element & is present in 14th group & 2nd period, silicon is a p block element present in 14th group &3rd period, nitrogen is p block element & belongs to 15th group &2nd period while fluorine is also a p block element present in 17th group & 2nd period.The non-metallic character of elements increases from left to right across a period. Thus, the decreasing order of non-metallic character is F > N > C > B.Again, the non-metallic character of elements decreases down a group. Thus, the decreasing order of non-metallic characters of C and Si are C > Si. However, Si is less non-metallic than B i.e., B > Si. Hence, the correct order of their non-metallic characters is F > N > C > B > Si.

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