Question

Elements in the same group on the periodic table have the same

number of electrons

number of protons

number of neutrons

number of valence electrons

Answer 1

Elements in the same group have the same number of valence electrons labelled in Roman numerals.

Also, From left side-Right side of the periodic is in the following order - Alkali Metals, Alkali Earth Metals, Halogens then Noble gases in the Far right of the periodic table