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MHT CET20244 May 2024Evening ShiftChemistryd and f Block ElementsActual

Which from following properties of lanthanoids is NOT true?

Options

  1. AThese are bad conductors of heat and electricity.
  2. BThese are soft metals.
  3. CCoordination number is usually greater than six.
  4. DThese are strongly paramagnetic.

Correct answer

A. These are bad conductors of heat and electricity.

Step-by-step solution

(1) These are bad conductors of heat and electricity: - This is incorrect. Lanthanoids are generally good conductors of heat and electricity, although they are not as good as transition metals. (2) These are soft metals: - This is true. Lanthanoids are relatively soft metals, especially the earlier ones in the series. (3) Coordination number is usually greater than six: - This is true. Lanthanoids, because of their large ionic radii, often have a coordination number greater than six, especially in complexes. (4) Th

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