How would you classify the following elements as main group elements, transition metals, or inner transition metals: 1.Ca 2.Fe 3.Ag 4.U 5.O 6.Pb?

Refer to the explanation below.

Ca is a main group element in period 4, group 2 of , in the s-block.

Fe is a transition metal in period 4, group 8 of the periodic table, in the d-block.

Ag is a transition metal in period 5, group 11 of the periodic table, in the d-block.

U is an inner transition metal in period 7, group 3 of the periodic table, in the f-block.

O is a main group element in period 2, group 16 of the periodic table, in the p-block.

Pb is a main group element in period 6, 14 of the periodic table. It is a post-transition metal and is in the p-block of .