JEE · NEET Previous Year Question
Identify the incorrect statement from the following:
Topic: NEET PYQ
Answer: A. Full step-by-step solution below.
- ALanthanoids reveal only +3 oxidation state.
- BThe lanthanoid ions other than the type and the type are all paramagnetic.
- CThe overall decreases in atomic and ionic radii from lanthanum to lutetium is called lanthanoid contraction.
- DZirconium and Hafnium have identical radii of 160 pm and 159 pm , respectively as a consequence of lanthanoid contraction.
Correct answer: A
Solution
(a) Lanthanoids can also show +2 or +4 oxidation states in solution or in solid compounds. Most common oxidation state of Lanthanoids is +3More d- and f-Block Elements PYQs
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