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Gd (64) has ………..unpaired electrons with...

Gd (64) has ………..unpaired electrons with sum of spin ………..

A

7,3.5

B

8,3

C

6,3

D

8,4

Text Solution

Verified by Experts

The correct Answer is:
D
E.C. of Gd (Z=64) is `[Xe] 4f^(7) 5d^(1) 6s^(2)`
Thus , it has 8 unpaired electrons and sum of spins
of 8 unpaired electrons `= 8 xx (1)/(2)= 4`
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PRADEEP-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -Competition Focus (Jee Main and Advanced / Medical Entrance ) ( Multiple Choice Question I )
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  2. The outer electronic configuration of Gd (At.No. 64) is

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  3. Gd (64) has ………..unpaired electrons with sum of spin ………..

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  4. The electronic configuration of Gd^(2+)is :

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  7. An element with atomic number 106 has been discovered recently. Which ...

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  8. The element Z=114 has been discovered recently. It will belong to whic...

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  13. The atom of smallest atomic radius among the following is

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  17. The species Ar,K^(+) and Ca^(2+) contain the same number of electrons....

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  18. Which of the following sets of ions represents a collection of isoelec...

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  19. The size of the following species increases in the order

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  20. For Na^(+),Mg^(2+),F^(-) and O^(2-), the correct order of increasing i...

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