Which planets are terrestrial

Mercury, Venus, Earth, and Mars.

Explanation:

From what I've read it's the planets closest to the sun which consist of silicate rocks or metals.

if it's a single answered question its Mars

if it's a multi-answered question then it's Mercury, Venus, Earth, Mars

Explanation:

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.