Question

The correct order of size of atoms is
A. N > O > F
B. F > N > O
C. N > F > O
D. F > O > N

Answer 1

Answer:

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Answer 2

A. N > O > F

Explanation:

Atomic size gradually decreases from left to right across a period of elements in the periodic table. This is because, within a period, all electrons are added to the same shell. The valence electrons are held closer towards the nucleus of the atom. As a result, the atomic radius decreases from left to right of a period. So Nitrogen atomic size is greater than oxygen. Oxygen atomic size is greater than Flourine.

Option A is the answer.