Question

arrange phosphorus, oxygen and nitrogen in the order of increasing radii and explain why?

Answer 1

Oxygen<nitrogen<phosphorus
this is because the element which is
situated in left or across a period the radii of elements decreases because of increase in charge or electrostatic force and on coming from up to down the radii increases due to increase in no. of shells

Answer 2

HOLA MATE HERE IS UR ANSWER ♥♥♥

that sounds alright. after all there are 3 main factors atomic radii; 

1) nuclear attraction
2) electron shielding effect
3) no. of quantum shells filled

and since (2) and (3) are relative constant for the elements you have mentioned, electron-electron repulsion in an orbital is a small factor that starts to count.



HOPE IT HELPS U ♥♥♥♥