Comparision of lanthanoids and actionoids
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CHXII08:THE D- & F-BLOCK ELEMENTS

321217 Assertion :
Magnetic properties of Actinoids are more complex than Lanthanoids.
Reason :
The variation in the magnetic susceptibility of the actinoids with the number of unpaired \(\mathrm{5 \mathrm{f}}\) electrons is roughly parallel to the corresponding results for the lanthanoids, the latter have higher values.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321218 Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

1 5f electrons are more effectively shielded from nuclear charge.
2 5f electrons provide poor shielding from element to element in series.
3 Actinoids are last row of the periodic table.
4 Both (1) & (2)
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CHXII08:THE D- & F-BLOCK ELEMENTS

321217 Assertion :
Magnetic properties of Actinoids are more complex than Lanthanoids.
Reason :
The variation in the magnetic susceptibility of the actinoids with the number of unpaired \(\mathrm{5 \mathrm{f}}\) electrons is roughly parallel to the corresponding results for the lanthanoids, the latter have higher values.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
CHXII08:THE D- & F-BLOCK ELEMENTS

321218 Actinoid contraction is greater from element to element than lanthanoid contraction. Why?

1 5f electrons are more effectively shielded from nuclear charge.
2 5f electrons provide poor shielding from element to element in series.
3 Actinoids are last row of the periodic table.
4 Both (1) & (2)
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