Question

The elements most likely to form more than one type of ion are the

transition metals

alkali metals

halogens

alkaline earth metals

Answer 1

B.......................

Answer 2

Transition metals

Step-by-step explanation:

Transition metals are metals with variable oxidation state due to their partially filled 3d orbital. Due to their partially filled 3d orbital, they tends exhibit more than one type of ion in their compound. This account for them being used as catalyst