is an atom that gains electrons; it's valence electrons is similar to a noble gas. ionic bond
covalent bond
anions
cations
melting point
boiling point
conductivity
polyatomic ions
valence electron
Metal
nonmetal
metaloids

nonmetal

is an atom that gains electrons; it's valence electrons is similar to a noble gas.

Explanation:

Because non metal like chlorine gain one elctron and attain electronic configuration of noble gas Argon

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.