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NEET2020Chemistryd and f Block ElementsActual

Identify the incorrect statement from the following:

Options

  1. AZirconium and Hafnium have identical radii of 160 pm and 159 pm , respectively as a consequence of lanthanoid
  2. Blanthanoid reveal only + 3 oxidation state.
  3. CThe lanthanoid ions other than the f 0 type and the f 14 type are all paramagnetic.
  4. DThe overall decrease in atomic and ionic radii from lanthanum to lutetium is called lanthanoid contraction.

Correct answer

B. lanthanoid reveal only + 3 oxidation state.

Step-by-step solution

lanthanoid shows general oxidation state + 3 but some elements can shows + 2 as well as + 4 . So the given option is wrong.

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