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| 1. |
Considering the elements `B, C, N, F` and `Si`, the correct order of their non-metallic character is ? |
| Answer» c. In a period, the non-metallic character increases from left to right Thus, among `B`,`C`,`N` and `F`, non-metallic character decreases in order:`FgtNgtCgtB`. However, within a group, non-metallic character decreses 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. | |