InterviewSolution
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InterviewSolution
| 1. |
Three elements P, Q, and R have successive atomic numbers with same period. If P > R > Q in terms atomic size. Predict the group of each element. Give reason. |
| Answer» Solution :Since P, Q, and R have successive atomic numbers, they lie in the same period. We know that even though atomic size DECREASES along a period, inert-gas elements have a slightly BIGGER atomic size than that of their PRECEDING element. Hence, R must be an inert gas. Hence, the group numbers of P. Q. and Rare 16, 17, and 18 RESPECTIVELY. | |