Chemistry - f-block Question with Solution | TestHub
Chemistryf-blockf-blockMedium2 minQB
ChemistryMediummultiple choice
The pair(s) of diamagnetic ions is(are) :
Options:(select one or more)
Answer:
A, B
Solution:
Diamagnetic ions have all electrons paired (no unpaired electrons).
Lanthanum in La³⁺ has configuration ending in stable empty/paired f-state, so it is diamagnetic.
Cerium in Ce⁴⁺ has 4f⁰ configuration, hence no unpaired electrons → diamagnetic.
Ytterbium in Yb²⁺ has 4f¹⁴ (fully filled), so diamagnetic.
Lutetium in Lu³⁺ has 4f¹⁴ (fully filled), hence diamagnetic.
Therefore, diamagnetic pairs are (A) and (B).
Stream:JEESubject:ChemistryTopic:f-blockSubtopic:f-block
⏱ 2mℹ️ Source: QB
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