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Compare the chemistry of actinoids with that of lanthanoids with reference to:
(i) Electronic configuration
(ii) Oxidation states
(iii) Chemical reactivity
(i) Electronic configuration
(ii) Oxidation states
(iii) Chemical reactivity
Solution:
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(i) Electronic configuration : In lanthanoids \(4 f\) - orbitals are progressively filled whereas in actinoids \(5 f\)-orbitals are progressively filled.
(ii) Oxidation states : Lanthanoids shows \(+3\) oxidation state. Some elements shows \(+2\) and \(+4\) oxidation state also. Actinoids shows \(+3,+4,+5+6,+7\) oxidation states. Although \(+3\) and \(+4\) are most common.
(iii) Chemical reactivity : Actinoids are more reactive than lanthanoids due to bigger atomic size and lower ionisation energy.
(ii) Oxidation states : Lanthanoids shows \(+3\) oxidation state. Some elements shows \(+2\) and \(+4\) oxidation state also. Actinoids shows \(+3,+4,+5+6,+7\) oxidation states. Although \(+3\) and \(+4\) are most common.
(iii) Chemical reactivity : Actinoids are more reactive than lanthanoids due to bigger atomic size and lower ionisation energy.
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