So you need to put numbers before each compound to make sure there are the exact same number of elements on each side. If you put a 4 before NH4 there are 4 Nitrogen and now 16 hydrogen. I just played around with numbers and guessed until I got them even.
A is true
B is false
C is true
Answer:
two electrons.
Explanation:
Helium-5, like all other helium isotopes, has two protons and two electrons. Its different from the others in the fact that it has three neutrons. It is one of the unstable isotopes, having a half-life of significantly less than a picosecond (a trillionth of a second). your welcome!!
