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How will you accout for the following ? (i) Actinoids exhibit more number of oxidation states than lanthanoids. (ii) Atomic radii of second and third transition series elements are almost identical. |
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Answer» Solution :(a) This is because energy differenoe in 5f, 6d and 7S orbitals of actinoids is smaller than 4F, 5d and 6s orbitals of lanthanoids. (B) Due to lanthonoid CONTRACTION. |
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