Well, if you look at group 1 of the periodic table, you will notice a thrend. All elements in group 1 have 1 valence / outer electron. Then you look at period 2, 3, 4 and so on, you will see that the group number corresponds the number of valence/ outershell electrons. Hence, the group determines the electron(s) on the outershell.
Yes Compounds are generally made of two or more atom or ion or species!
TRUE
Answer:
you place it where you think it should be placed
Explanation:
They both have seven electrons in their outer shell.