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JEE MAIN 2019
12-04-2019 S2
Question
The pair that has similar atomic radii is :
Select the correct option:
A
Mo and W
B
Ti and Hf
C
Sc and Ni
D
Mn and Re
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Mo and W belong to group-6 and period 5 (4d
series) and 6 (5d series) respectively.
Due to lanthanoid contraction, radius of Mo and W are almost same.
Question Tags
JEE Main
Chemistry
Easy
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