Answer:
I and II
Explanation:
I. It will take more energy to add an electron to nitrogen than to carbon in order to achieve a noble gas configuration because nitrogen the outer shell (p-orbital) of nitrogen is filled with three electrons which will require alot of energy to add the required five electrons to achieve a noble gas configuration. Carbon on the other hand has four electrons in its outer shell which makes it more closer to achieving a noble gas configuration than nitrogen
II. The radius of flourine is not smaller compared to oxygen because fluorine has more electron than oxygen this makes its atomic radius increases due to the addition of energy shell.