Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)

Question

Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers) (A) Zr(40) and Hf (72) (B) Zr (40) and Ta (73) (C) Ti (22) and Zr (40) (D) Zr (40) and Nb (41)

Tardigrade Admin · Accepted Answer

Due to lanthanide contraction ‘4d’ and ‘5d’ series of elements have almost same atomic radii.

Q. Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii? (Numbers in the parenthesis are atomic numbers)

Zr(40) and Hf (72)

Zr (40) and Ta (73)

Ti (22) and Zr (40)

Zr (40) and Nb (41)

Due to lanthanide contraction ‘4d’ and ‘5d’ series of elements have almost same atomic radii.

Q. Because of lanthanoid contraction, which of the following pairs of elements have nearly same atomic radii?
(Numbers in the parenthesis are atomic numbers)