CBSE Notes, Lectures

CBSE - Chemistry - Periodic Classification of Elements

Periodic Classification of Elements

Short Answer Type

Arrange the following elements in increasing order of their atomic radii.

Arrange the following elements in increasing order of their atomic radii.
(a) Li, Be, F, N
 Ans. Li >Be>F>N
 These elements are in same period and are arranged from left to right.
(b) Cl, At, Br, I
 Ans. Cl<Br<I<At
 These elements are in same group and are arranged from top to bottom. 

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