Identify the incorrect statement from the following:

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

Solution

Asked in: NEET 2020 (Phase 2)

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