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Which of the following exhibits only +3 ...

Which of the following exhibits only +3 oxidation state?

A

Th

B

Ac

C

Pa

D

U

Text Solution

Verified by Experts

The correct Answer is:
B
Actinium:-
Atomic No = 89
Configuration `=[Rn]6d^(1)7s^(2)`
stable oxidation state `rArr +3`
`Th=+3,+4`
`Pa=+3,+4,+5`
`U=+3,+4,+5,+6`
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