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प्रश्न
On the basis of Lanthanoid contraction, explain the following:
Trends in the stability of oxo salts of lanthanoids from \[\ce{La}\] to \[\ce{Lu}\].
उत्तर
The stability of Oxo salts is directly proportional to the size of atom, as we move from \[\ce{La}\] to \[\ce{Lu}\], the size of the atom decreases and hence the stability of oxo salts also decreases.
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संबंधित प्रश्न
Define lanthanoid contraction.
What are the different oxidation states exhibited by the lanthanoids?
What are the consequences of lanthanoid contraction?
What is meant by Lanthanide contraction? Write the general electronic configuration of inner transition elements.
What is the action of the following on lanthanoids?
a. water
b. Sulphur, heat
c. nitrogen, heat
Match the compounds/elements given in Column I with uses given in Column II.
| Column I (Compound/element) | Column II (Use) | |
| (i) | Lanthanoid oxide | (a) Production of iron alloy |
| (ii) | Lanthanoid | (b) Television screen |
| (iii) | Misch metal | (c) Petroleum cracking |
| (iv) | Magnesium based alloy is constituent of | (d) Lanthanoid metal + iron |
| (v) | Mixed oxides of lanthanoids are employed | (e) Bullets |
| (f) In X-ray screen |
Zr(Z = 40) and Hf(Z = 72) have similar atomic and ionic radii because of ______
The lathanide ion that would show colour is ______.
Which one of the lanthanoids given below is the most stable in divalent form?
State a reason for the following:
La(OH)3 is more basic than Lu(OH)3.
