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.(90)Th is a member of III group . After...

`._(90)Th` is a member of III group . After losing `alpha`-particle it forms a new element belonging to :
a) I group
b) II group
c) III group
d) IV group

A

I group

B

II group

C

III group

D

IV group

Text Solution

Verified by Experts

The correct Answer is:
B
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