d and f BLOCK ELEMENTS

How does the stability of Cr(VI) compare to Mo(VI) and W(VI) according to the text?

• Cr(VI) is more stable
• Cr(VI) is equally stable
• Cr(VI) is less stable than Mo(VI) and W(VI)
• Stability cannot be compared

Which transition metal is specifically named as NOT exhibiting variable oxidation states?

• Titanium
• Vanadium
• Iron
• Scandium

What is the primary reason Zinc exhibits only the +2 oxidation state?

• It has a high ionization energy
• Its 3d subshell is completely filled
• It is the largest element in the series
• It has low electronegativity

Which of the following complex ions would feature Iron in a +3 oxidation state?

• [Fe(CN)₆]⁴⁻
• [Fe(H₂O)₆]²⁺
• [Fe(NH₃)₆]²⁺
• [Fe(CN)₆]³⁻

What is the oxidation state of Vanadium in V₂O₅ (vanadium pentoxide)?

• +3
• +4
• +5
• +6