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What is the composition of mischmetal alloy?

It contains 94-95 lanthanoid metal, 5% iron and traces of sulphur, calcium, aluminium, carbon and silicon.

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What is the range of E° value of lanthanoids for Ln³⁺/Ln?

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What is the maximum oxidation state shown by actinoids?

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Why lanthanoids are called f-block elements?

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The size of the trivalent cations in the lanthanoid series decrease steadily as the atomic number increases. What is this known as?

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Why lanthanoid ions are coloured?

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What is the electronic configuration difference between lanthanoids and actinoids?

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Give two uses of lanthanoid compounds.

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In actinides last electron goes to which subshell?

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In permagnate ion, all the bonds formed between Mn and O are covalent. Give reasons.

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