Q3 / 160 · AP EAMCET 2024 (21 May Shift 2) · Chemistry

The correct order of atomic radii of N, F, Al, Si is

A
$\mathrm{F}\gt\mathrm{N}\gt\mathrm{Si}\gt\mathrm{Al}$
B
$\mathrm{F}\gt\mathrm{N}\gt\mathrm{Al}\gt\mathrm{Si}$
C
$\mathrm{Al}\gt\mathrm{Si}\gt\mathrm{F}\gt\mathrm{N}$
Correct answer
D
$\mathrm{Al}\gt\mathrm{Si}\gt\mathrm{N}\gt\mathrm{F}$

Solution

In periodic table, left to right atomic radii decreases and from top to bottom atomic radii increases. $\therefore \quad \mathrm{Al}\gt\mathrm{Si}\gt\mathrm{N}\gt\mathrm{F}$

Hence, the correct answer is option: 'D'.

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