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f-block elements are placed in...

f-block elements are placed in

A

`2^(nd)` group, `4^(th) and 5^(th)` row

B

`3^(rd)` group, `6^(th) and 7^(th)` row

C

`4^(th)` group `4^(th) and 5^(th)` row

D

`5^(th)` group, `4^(th) and 7^(th)` row

Text Solution

Verified by Experts

The correct Answer is:
B
We know that, these are placed at III B group and `6^(th)and 7^(th)` row in the periodic table. Lanthanides are placed in III B group and `6^(th)` row Actinides are placed in III B and `7^(th)` row.
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