Which of the following gives the correct increasing order of the atomic radii of O, F and N ? (a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N

Soln:

Answer is (d) F, O, N

Explanation:

Atomic radius increase as move from left to right across a period. (N7), O(8) and F(10) are in increasing order of atomic numbers.