Larger number of oxidation states are exhibit | vedclass

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(A) The $5f$,$6d$,and $7s$ energy levels in actinoids are of comparable energy. Because of this small energy gap,electrons from all these orbitals can

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Lesser energy difference between $5f$ and $6d$ than $4f$ and $5d$ orbitals

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(A) The $5f$,$6d$,and $7s$ energy levels in actinoids are of comparable energy. Because of this small energy gap,electrons from all these orbitals can participate in bonding,leading to a larger number of oxidation states. In contrast,in lanthanoids,the $4f$ orbitals are deeply buried and have a much larger energy difference compared to $5d$ orbitals,restricting the number of oxidation states.

Larger number of oxidation states are exhibited by the actinoids than those by the lanthanoids,the main reason being

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