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Why are Mn^(2+) compounds more stable th...

Why are `Mn^(2+)` compounds more stable than `Fe^(2+)` towards oxidation to their +3 state?

A

TTFT

B

TFFT

C

TFTT

D

FFTF

Text Solution

Verified by Experts

The correct Answer is:
B
`S_(1):` It is because `Mn^(2+)` has `3d^(5)` configuration which has extra stability.
`S_(2):` Not titatnium but copper, because with +1 oxidation state an extra stable configuraiton `3d^(10)` results
`S_(3):`It is not stable as it undergoes disproportionation `2Cu^(+)(aq)toCu^(2+)(aq)+Cu(s).` The `E^(underline(o))` value for this is favourable.
`S_(4)`: Much larger third ionisation energy of Mn (where the required change is `d^(5)` to `d^(4)`) is mainly responsible for this.
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RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Only one option correct type
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  2. When K(4)[Fe(CN)(6)] is added to FeCl(3),the complex compound formed i...

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  3. FeCl(3).6H(2)O is actually:

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  4. Aqueous solution of which of the following ions is green?

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  5. What happens when: CO2 gas is bubbled through green solution of K2MnO...

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  8. When copper is placed in the atmosphere for sufficient time, a green c...

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  9. FeCl(3) dissolves in:

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  10. When AgNO(3)(aq) reacts with excess of iodine, we get:

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  11. ZnO+CoOundersetto(Delta)X,Product X colour is:

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  12. The compound that gets oxidised even on exposure to atmosphere is:

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  13. The +3 ion of which one of the following has half filled 4f subshell?

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  16. VO(2) is an amphoteric oxide and in acidic medium it form:

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