Which element does not have the same number of electrons in its outermost shell as the other elements in its group?(1 point)

Question

Responses

bromine (Br)
bromine ( b r )

helium (He)
helium ( h e )

boron (B)
boron ( b )

hydrogen (H)

Answer 1

The element that does not have the same number of electrons in its outermost shell as the other elements in its group is hydrogen (H).

Hydrogen has one electron in its outermost shell, whereas the other elements in its group (alkali metals) typically have one electron in their outermost shell, but hydrogen behaves differently and does not share the same chemical properties as the alkali metals.