Answer:
The trick here is to realize that the nitride anion, N3− , is isoelectronic with neon, Ne , the noble gas that shares a period with nitrogen, N . In other words, the nitride anion has the same number of electrons as neon.J
Explanation:
The answer is 3. As 5 * 3 = 15.
Is there any other equations I may be able to help you with? :)
It affects it by making the freezing point to become lower.