NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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Which does not possess allotropic forms?

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Correct option: C

Option C (Fe) is correct because Iron (Fe) exhibits allotropy, but the question asks which does NOT possess allotropic forms. Carbon, Tin, and Phosphorus all exhibit allotropy.

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A substance which is not paramagnetic is: Green vitriol is Which is the correct order of ionic sizes?) At.no.∶Ce=58,Sn=50,Yb=70 and Lu=71) In the first transition series, the differentiating electron enters: Philosopher’s wool on heating with BaO at 1100

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