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7. The atomic radii of three elements A, B and C of the periodic table are 186 pm,192 pm and 143 pm respectively. Arrange these elements in the increasing order ofatomic numbers in the period by giving reasons.

Answer»

The higher the atomic radius the higher the atomic numberA = 186 pmB = 192 pmC =143When we convert it into increasing atomic radius then first will be C then A and then the biggest B

CAB



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