Answer
a) Lithium, Sodium
b) Magnesium, Beryllium
c) Chlorine, Iodine
d)Argon, Neon
e) Sulfur, Oxygen
f) Iron, Copper.
Work Step by Step
Recall that alkali metals are group 1 elements, alkaline earth metals are group 2 elements, halogens are group 17 elements, noble gases can be seen in group 18, chalcogens are in group 16 and d-block elements are transition metals. Now, it is easy to give two examples belonging to each category by referring to the periodic table.
