Differentiate between melting point and boiling point

The main difference between boiling point and melting point is that the melting point is defined as the temperature at which solid and liquid phases are in equilibrium, whereas the boiling point is the temperature at which the vapour pressure of a liquid is equal to the external pressure

it's c. elements are placed in rows based on how may valencies electrons have.

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.