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On the basis of lanthanoid contraction, ...

On the basis of lanthanoid contraction, explain the following :
Nature of bonding in `La_(2)O_(3)` and `Lu_(2)O_(3)` .

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As the size decreases from La to Lu, covalent character of the bond formed increases (Fajan's rule). Thus, `La_(2)O_(3)` is more ionic and `Lu_(2)O_(3)` is more covalent.
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -SOLVED NCERT EXEMPLAR PROBLEMS (Long Answer Type)
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  3. When an oxide of manganese (A) is fused with KOH in the presence of an...

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  4. On the basis of lanthanoid contraction, explain the following : Nat...

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  5. On the basis of lanthanoid contraction, explain the following : Tre...

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  6. On the basis of lanthanoid contraction, explain the following : Sta...

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  7. On the basis of lanthanoid contraction, explain the following : Rad...

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  9. Answer the following questions : Which element of the first transit...

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  10. Answer the following questions : Which element of the first transit...

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  11. Answer the following questions : Which element of the first transit...

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  13. Mention the type of compounds formed when small atoms like H, C and N ...

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  14. Transition metals can act as catalysts because these can change their ...

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  15. Mention any three processes where transition metals acts as catalysts.

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  16. A violet compound of manganese (A) decomposes on heating to liberate o...

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