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Identify the incorrect statement from the following

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Actinoid contraction is greater from element to element than lanthanoid contraction

The magnetic properties of the lanthanoids are more complex than those of actinoids.

Many trivalent lanthanoid ions are coloured both in the solid state and in aqueous solutions.

The first ionisation enthalpies and second ionisation of lathanoids are comparable with those of calcium

answer is D.

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Detailed Solution

The magnetic properties of actinoids are more complex than those of lanthanoids. The
magnetic susceptibility values of lanthanoids
are higher than actinoids.

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