Question

how many electrons will be lose by group IA elements to get octet in thier outer shell ​

Answer 1

Number of electrons in the outermost shell:

In any group, all the elements have the same number of electrons in their outermost shells.

example;

Consider group 1 element( 1A )

No. of electron in the outermost shell: 1

so,

Alkali metals,is electropositive and has tendency to lose one electron.

Answer

it will lose 1 electron