It is because of the small size and high electronegativity of nitrogen.
<span>Nitrogen has very small size as compared to the halogens, which have much larger sizes. Due to this, they can not remain bonded to the nitrogen atom and hence are highly unstable. </span>
No acids have a ph of less than 7 our rain is around a six. dilated water is a 7 and any thing above a 7 is a base
Electrons are added to the same principal energy level.
