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प्रश्न
For each of the following triads, name the element with the characteristics specified below:
| Elements | Least atomic radius | Chemically least reactive |
| (i) F, Cl, Br (ii) Li, Na, K |
.................... .................... |
.................... .................... |
उत्तर
| Elements | Least atomic radius | Chemically least reactive |
| (i) F, Cl, Br | F | Br |
| (ii)Li, Na, K | Li | Li |
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