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The d-And-f-Block Elements

Short Answer Type

31.

Which element shows the highest oxidation state among the d-block elements?

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32. What is the reason of transition elements to exhibit variable oxidation states?

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33. Out of V and Mn which exhibits more oxidation states?

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34.

What is the most stable oxidation state of Mn (Z = 25)?

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35. Write the highest oxidation state shown by element with atomic number 23.

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36.

The electronic configuration of an element is 3d⁵ 4s¹. Write its (i) most stable oxidation state and (ii) most oxidising state.

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37. The electronic configuration of an element is 3d⁵ 4s¹. Write its (i) most stable oxidation states and (ii) most oxidising oxidation state.

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38. What is the highest oxidation state shown by Cr (Z = 24)?

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39. Why are Cr²⁺ reducing and Mn³⁺ oxidising when both have d⁴ configurations?

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40. The E° value of Zn²⁺/Zn and Mn²⁺/Mn are quite low. Why?

The high E° value of Mn²⁺/Mn is related to the extra stability of its Mn²⁺ ion due to half filled d-orbitals whereas, for the Zn²⁺/Zn, it is due to the extra stability of fully filled d-orbitals of Zn²⁺ ion.

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40. The E° value of Zn2+/Zn and Mn2+/Mn are quite low. Why?

40. The E° value of Zn²⁺/Zn and Mn²⁺/Mn are quite low. Why?