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JEE Main 20203 SeptemberEvening Shift

Exam: JEE Main
Year: 2020
Date: 3 September
Shift: Evening Shift
Subject: Chemistry
Chapter: d and f Block Elements

JEE Main 2020 · 3 September · Evening Shift · Chemistry · d and f Block Elements

The incorrect statement is:

The incorrect statement is:

The incorrect statement is:

The incorrect statement is:

Options

AManganate and permanganate ions are tetrahedral
BIn manganate and permanganate ions, the $\pi$ -bonding takes place by overlap of p-orbitals of oxygen and d-orbitals of maganese
CManganate and permanganate ions are paramagnetic
DManganate ion is green in colour and permanganate ion is purple in colour

Correct answer

C. Manganate and permanganate ions are paramagnetic

Step-by-step solution

Manganate

${MnO}_{4}^{2 -}$

The incorrect statement is:

~Paramagnetic, green in colour,
Tetrahedral $&$ contains $p \pi - d \pi$ bond

Permanganate

${MnO}_{4}^{Θ}$

The incorrect statement is:

Diamagnetic, purple in colour,
Tetrahedral $&$ contains $p \pi - d \pi$ bond&

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