Considering the elements B, C, N, F and Si, the correct order of their non-metallic character is

Options

A. B >C>Si>F>Si
B. Si >C >B >N>F
C. F>N>C>B>Si
D. F>N>C>Si>B

Answer

c

Explanation

In a period, the non-metallic character increases from left to right. Thus, among B, C, N and F, non-metallic character decreases in the order: FgtNgtCgtB. However, within a group, non-metallic character decreases from top to bottom. Thus, C is more non-metallic than Si. Therefore, the correct sequence of decreasing non-metallic character is: FgtNgtCgtBgtSi, i.e., option (c) is correct.