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  • Lanthanides form halides  of the same formula but why their coordination number decreases as we move across the group?<

Lanthanides form halides \mathrm{LnX_3} of the same formula but why their coordination number decreases as we move across the group?

Option: 1

Increase in number of unpaired electrons.

 


Option: 2

Smaller size of cation as we move across the group.

 


Option: 3

Larger size of cations as we move across the group.

 


Option: 4

Shielding effect of f-orbitals effect the coordination number.


Answers (1)

best_answer

As the cation size becomes small it can accommodate lesser number of ligands.

Posted by

Ritika Jonwal

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