Question

which of the following is a halogen? answer: a sodium b copper c neodymium d selenium e iodine

Explanation:

Halogens are elements in Group 17 of the periodic table. Sodium (Na) is in Group 1 (alkali metals), copper (Cu) is a transition metal, neodymium (Nd) is a rare - earth metal, selenium (Se) is in Group 16 (chalcogens), and iodine (I) is in Group 17 (halogens).

Answer:

E. iodine