Answer:
b) Fe (iron)
Explanation:
Hi, Fe is the only of the listed elements that belongs to the transition metals.
The transition metals are huge group, with different characteristics between the elements in the group. They conform the groups 3 to 12 of the periodic table.
Althought Lead (Pb) is a metal, it belongs to the post-transition metals
Mg belongs to the alkline earth metals and At to the metalloids.
