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The questions given below consist of an ...

The questions given below consist of an Assertion and a Reason. Use the following key to choose the appropriate answer.
If both assertion and reason are CORRECT and reason is the CORRECT explanation of the assertion.
If both assertion and reason and CORRECT, but reason is NOT THE CORRECT explanation of the assertion.
If assertion is CORRECT but reason is INCORRECT.
If assertion is INCORRECT but reason is CORRECT.
If both assertion and reason are INCORRECT.
Assertion: `E^@` for `Mn^(3+)|Mn^(2+)` is more positive than `Cr^(3+)|Cr^(2+)`.
Reason: The third ionistation energy of Mn is larger that than of Cr.

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MODERN PUBLICATION-d-AND f- BLOCK ELEMENTS-EXERCISE
  1. Explain the following observation : In general, the atomic radii of tr...

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  2. The E(M^(2+) // M)^@ for copper is positive (0.34 V). Copper is the on...

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  3. The questions given below consist of an Assertion and a Reason. Use th...

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  4. Which one of the following ions will exhibit colour in aqueous solutio...

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  5. Express 1380 in roman numbers.

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  6. Draw lewis structure of hydronium ion .

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  7. Write chemical reaction for preparation of K2Cr207 from chromite ore.

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  8. Write the oxidation of H2S by acidified KMnO4.

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  9. Write the oxidation of H2S by acidified KMnO4.

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  10. What are lanthanoids ?

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  11. Why transition metals show catalytic properties?

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  12. How would you account for the following: The d1 configuration is very ...

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  13. How would you account for the following : SF(6) is kinetically inert...

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  14. Why is the highest oxidation state of a metal exhibited in its oxide...

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  15. Give reasons for the following : Copper cannot displace zinc from it...

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  16. Why the actinoids exhibit a large number of oxidation states than the ...

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  17. How would you account for the following : SF(6) is kinetically inert...

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  18. Why the actinoids exhibit a large number of oxidation states than the ...

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  19. How would you account for the following ? Most of the transition metal...

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  20. Why enthalpy of atomisation of the transition elements are quite high ...

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