Question

Electronic configuration of an element x is 27 to which group and period of the modern table does x belong state its valency also mention the type of compound it will form if react with sodium

Answer 1

The compound formed will have the chemical formula XY3 where the valency of X is +3 due to which it would loose 3 electron to achieve the stable configuration,while that of Y is -1 due to which it readily accepts an elctron to achieve stable inert gas configuration.

These type of compound are formed by the elements of group 13