Question

element "A" belong to 3rd period and group 1 of the modern periodic table.write the formula of the compound formed by"A" with the most reactive non metal of the period​

Answer 1

Explanation:

belongs to group 1 it has 1 valence electron in its atom. <br> (ii) The valency of group 1 element is 1 . So, the valency of element

is 1. <br> (iii) Group 1 is on the left side of periodic table and consists of metals. So element

is a metal. <br> (iv) The first element of third period is sodium. So the element

is sodium (

) <br> (v) Group 1 is to alkali metals, therefore, element

belongs to alkali metal family.

Answer 2

Answer:

A is sodium

the compound formed is NaCl