d and f BLOCK ELEMENTS

What is the oxidation number of the metal in the complex [Fe(CN)₆]⁴⁻?

• 0
• +1
• +2
• +3

Which of the following best describes the oxidation state pattern for elements in the middle of the 3d series?

• They exhibit only one oxidation state
• They exhibit the maximum number of oxidation states
• They only show low oxidation states
• They are always in zero oxidation state

In the compound ZnO, what is the oxidation state of Zinc?

• 0
• +1
• +2
• +3

What is the oxidation state of Titanium in TiO₂?

• +2
• +3
• +4
• +5

Which of the following is a characteristic feature of transition metal compounds regarding oxidation states?

• They show only one oxidation state
• They show variable oxidation states
• They always show high oxidation states
• They never show low oxidation states