Which gives the correct increasing order of the atomic radii of O, F and N

• GC Periodic Classification

Which of the following gives the correct increasing order of the atomic radii of O, F and N?

1. O, F, N
2. N, F, O
3. O, N, F
4. F, O, N

Answer

From left to right in the Modern Periodic table, the atomic radii decrease with increasing the atomic number. The atomic number of F, O and N are 9, 8 and 7 respectively so atomic radius will decrease from N to F.

The correct option is D.