Question
Which of the following atoms has minimum covalent radius
✓
Answer
c
As we move along a period radius decreases and as we move down the group, radius increases.
As we move along a period radius decreases and as we move down the group, radius increases.
Hence, $B (5)\,>\, C (6)\,>\, N (7)$.
Also, $\left( r ^{ n } \propto \frac{1}{Z}\right.$ along a period)
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