What is the name of the wave ?
The number of times per second that the wave cycles.

Deposition is the transition of matter going from gas to solid without passing through the liquid phase.a.) gas—-> solid

The answer to this question is a

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.