Question

why does flourine from F- ion and sodium from Na + ion but Helium does not make any ion ?​

Answer 1

because helium is inert or noble gas .Hence helium outer most is filled .Hence this is reason why helium does not make ions

Hope its helps u!!!

Answer 2

flourine forms F- ion because it gains electron while making bonds and its valency is 1.

Sodium loses electron while making bonds and its valency is 1, as a result it forms Na+ ion.

Whereas Helium's valency is 0 and it shares electrons while making bonds, as a result it does not make any ion