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Earn 100

Which of the following statement(s) is/are correct?
a. The oxidation potential M/M2+ of Cu is least in the 3d series.
b. Fe3+ is more stable than Mn3+ in aqueous solution.
c. Exchange energy is more in case of Fe3+than Mn3+.
d. First IE of Mn is more than that of Fe.

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Important Questions on d-Block and f-Block Elements

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Mention the species in which the degeneracy of all five 3d orbitals are maintained.

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What is the value of magnetic moment observed in octahedral complex of Zn2+ ion?
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The elements with maximum and minimum melting points in the second transition series respectively are
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Among the following crystals, which crystal is isomorphous with Epsom salt?
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The electronic configuration of Cu (II) is 3d9 whereas, that of Cu (I) is 3d10. Therefore,
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Among the following compounds, which will show colour but not due to charge transfer?

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Among the following ions, which one is the best reductant in its aqueous solution? (Given EMn3+|Mn0=-0.28 V ECr2+|Cr0=-0.90 V,ECe4+|Ce0=+1.35 V )