D-And F-Block Elements Ques 501

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

Options:

A) Zr(40) and Nb(41)

B) Zr(40) and Hf(72)

C) Zr(40) and Ta(73)

D) Ti(22) and Zr(40)

Show Answer

Answer:

Correct Answer: B

Solution:

Due to lanthanoid contraction atomic radii of Zr and Hf is almost similar.



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक