(i) Mischmetal (an alloy) is used in gas lighters, tracer bullets and shell. (ii) Oxides of neodymium and praseodymium are used for making colour glasses.
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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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In permagnate ion, all the bonds formed between Mn and O are covalent. Give reasons.
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What is the composition of mischmetal alloy?
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What is the electronic configuration difference between lanthanoids and actinoids?
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What is the range of E° value of lanthanoids for Ln3+/Ln?
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In actinides last electron goes to which subshell?
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Why lanthanoid ions are coloured?
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Why lanthanoids are called f-block elements?
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What is the maximum oxidation state shown by actinoids?
