An element `A` belongs to third period and group 1 of the periodic table. Find out:
(i) the number of valence electrons in its atoms (ii) valency of the element
(iii) metal or non-metal (iv) name of the element
(v) name of the family to which this element belongs

Explanation

(i) Since element `A` belongs to group 1 it has 1 valence electron in its atom.
(ii) The valency of group 1 element is 1 . So, the valency of element `A` is 1.
(iii) Group 1 is on the left side of periodic table and consists of metals. So element `A` is a metal.
(iv) The first element of third period is sodium. So the element `A` is sodium (`Na`)
(v) Group 1 is to alkali metals, therefore, element `A` belongs to alkali metal family.