The correct increasing order of the atomic radii of the elements oxygen, fluorine and nitrogen is :
(a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N
(d) F, O, N
The increasing order of the atomic radii of oxygen, fluorine and nitrogen is fluorine<oxygen<nitrogen.
This is because the atomic radius decreases from left to right in a period.