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f- Block Elements

Which atom is...

Question

Which atom is the smallest?

A

Rb

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B

Ag

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C

Sb

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D

I

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Solution

The correct option is D I
Option (D) is the correct answer.
$I o d i n e$ atom is smallest.
In a period, on moving from left to right, the atomic radius decreases.
$R b, A g, S b$ and $I_{2}$ belong to fifth period.

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