NEET UG CHEMISTRY MCQ: REDOX REACTIONS

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Understanding +4 | -1

Which one of the following lanthanoids does not form

M{O_2}

? [

M

is lanthanoid metal]

View answer and explanation

Correct option: D

Yb

Option D (

Yb

) is correct because Ytterbium (Yb) typically forms +3 compounds, and its +4 state is less stable, preventing the formation of

MO_2

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{I_2}

\mathrm{MnO}_4^ - + {\mathrm{C}_2}\mathrm{O}_4^{2 - } + {\mathrm{H}^ + } \to \mathrm{M}{\mathrm{n}^{2 + }} + \mathrm{C}{\mathrm{O}_2} + {\mathrm{H}_2}\mathrm{O}

\mathrm{MnO}_4^ -

{\mathrm{C}_2}\mathrm{O}_4^{2 - }

{\mathrm{H}^ + }