Question

Compare how the numbers of protons and neutrons change as you move from the smallest to the largest atom
largest?

Answer 1

Answer:

Atomic radius decreases from left to right within a period. This is caused by the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius.

So C,N,O and F belongs to same period and thus C will have greater atomic size.