Answer
The main group of metals tend to lose electrons to form cations with a charge equal to the group number. The main group of nonmetals tend to gain electrons and form anions with a charge equal to the group number minus eight. All of these ions have the same number of electrons as the nearest noble gas.
Work Step by Step
The main group of metals tend to lose electrons to form cations with a charge equal to the group number. The main group of nonmetals tend to gain electrons and form anions with a charge equal to the group number minus eight. All of these ions have the same number of electrons as the nearest noble gas.