Inorganic Chemistry - d & f Block Elements

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Q1. What is the common oxidation state of chromium in CrO3? (2023)

Solution:

In CrO3, chromium (Cr) has an oxidation state of +6.

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Q2. Which of the following ions is responsible for the color of the solution in transition metal complexes? (2022)

Solution:

Cations of transition metals are primarily responsible for the color of their complexes.

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Q3. Which of the following is a common oxidation state of iron? (2023)

Solution:

Iron commonly exhibits oxidation states of +2 and +3, with +3 being more prevalent in compounds.

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Q4. Which of the following is a common oxidation state of gold? (2023)

Solution:

Gold commonly exhibits oxidation states of +1 and +3, with +3 being the most stable.

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Q5. Which of the following is a common oxidation state of manganese? (2022)

Solution:

Manganese commonly exhibits an oxidation state of +2.

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Q6. Which of the following is not a characteristic of d-block elements? (2023)

Solution:

D-block elements typically have variable oxidation states and lower ionization energies compared to p-block elements.

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Q7. What is the primary oxidation state of vanadium in V2O5? (2023)

Solution:

In V2O5, vanadium has an oxidation state of +5.

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Q8. What is the common oxidation state of iron in FeCl3? (2023)

Solution:

In FeCl3, iron (Fe) has an oxidation state of +3.

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Q9. Which of the following elements is known for its ability to form complex ions? (2022)

Solution:

Copper (Cu) is known for its ability to form complex ions due to its d-orbitals.

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Q10. Which of the following compounds is a typical example of a transition metal complex? (2022)

Solution:

Fe(CN)6^4- is a typical example of a transition metal complex.