d and f BLOCK ELEMENTS MCQ Quiz: GKFix - Bridge of Knowledge

Question 86

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How many unpaired electrons are present in a gaseous V3+ ion?

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How many unpaired electrons are present in a gaseous Cr3+ ion?

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How many unpaired electrons are present in a gaseous Mn3+ ion?

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What is the relationship between the number of unpaired electrons and the magnetic properties of transition metal ions?

More unpaired electrons make a substance diamagnetic.
Ions with unpaired electrons are paramagnetic, while ions with all electrons paired are diamagnetic.
Unpaired electrons have no effect on magnetism.
Magnetism is only related to the nucleus.

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What is a key reason why transition metal ions with d0 or d10 electronic configurations are typically colourless?

They do not form complexes.
They absorb all wavelengths equally.
There are no available d-d transitions possible for electronically allowed absorptions.
They are always in aqueous solution.