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Consider the following statements (1) ...

Consider the following statements
(1) The basic strength of hydroxides of lanthanides decreases from `La(OH)_3 " to " Lu(OH))_3`
(2) The lanthanoid ion `Lu^(3+) Yb^(2+) and Ce^(4+)` are diamagnetic
(3) The corret order of ionic radii of `Ce^(3+) , La^(3+) Pm^(3+) and Yb^(3+) is Yb^(3+) lt Pm^(3+) lt La^(3+) lt Ce^(3+)`
Which of the statemnets given above is / are correct ?

A

1 only

B

1,2 only

C

1,2 and 3

D

None to these

Text Solution

Verified by Experts

The correct Answer is:
B
`Lu = [Xe] 4f^(14) 5d^(1)6s^(2)`
`Yb = [Xe] 4f^(14) 5d^(0) 6s^(2)`
`Ce = [Xe] 4f^(1)5d^(1) 6s^(2)`
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