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NEET UG CHEMISTRY MCQ: d & f- BLOCK ELEMENTS

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{Na}_2 {O}_2

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Correct option: D

All are correct properties of

{Na}_2 {O}_2

Option D (All are correct properties of

{Na}_2 {O}_2

) is correct because

{Na}_2 {O}_2

is diamagnetic, it's a salt of dibasic acid

{H}_2 {O}_2

, and it oxidizes

{Cr}^{3+}

to

{CrO}_4^{2-}

.

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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

^\circ

C produce A compound in which a metal ion

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\sqrt {24}

BM. The number of unpaired electrons in the compound and the oxidation state of the metal ion are respectively.