NEET 2024 (CHEMISTRY) Question Paper with Answer Key - ERRORLESS

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Q 94- 4 is right because of backbonding

ombiranwar
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The E° value for the Mn³+/Mn2+ couple is more positive than that of Cr³+/Cr²+ or Fe3+/Fe2+ due to change of
(1) d5 to d4 configuration
(2) d5 to d² configuration
(3) d4 to d^5 configuration
(4) d³ to d ^5configuration
Ans. (3)
All give answer 3 . But answer should be 1

NCERT SOLVE EXAMPLE 8.7
OLD NCERT, D AND F BLOCK, PAGE NUMBER 227
Why is the E^° value for the Mn+3/Mn+2 couple much more positive than that for Cr+3/Cr² or Fe+3/Fe+2? Explain.
Solution Much larger third ionisation energy of Mn (where the required change is d^5 to d^4) is mainly responsible for this. This also explains why the +3 state of Mn is of little importance.

ABCDEfgh-iwyk
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Q) 52 Po ans kyse ho sakta hai Ncert mei saf saf likha hai ki "Po hardly shows -2 oxidation state"... Har koi is wale question ka ans Po de raha hai.. Ncert nhi padte ho

dayalmal