Answer:
5 valence electron
Explanation:
It is because the group number is equal to the valence electron.
It is heterogeneous as it is made up of visibly different substances or phases.
the volume of the same gas at pressure of 1.00atm =737.3ml
umm i guess if there is a liquid inside it would rise to the top and the metal would sink to the bottom
what is the 2nd and 1st question
