Four elements P,Q,R and S have 1,2,3, and 7 electrons in their outermost shells respectively. The element which is unlikely to be a metal is?

Ritaude

2 years ago

this is because it has it is the only element among the four that has its d-orbital or last shell completely filled
hence knocking it out of the choice to be in the transitional series ( research characteristics of metals in transition series) where most metals belong to.

Mjjkke

5 years ago

Yes very correct because that is chlorine .......group 7 halogen

onyedika103

2 months ago

very much collect