d and f BLOCK ELEMENTS

Which of the following is a correct statement about the structure of MnO₄⁻ and MnO₄²⁻ ions based on the text?

• Both have p-d π bonding
• Only MnO₄⁻ has p-d π bonding
• Only MnO₄²⁻ has p-d π bonding
• Neither has p-d π bonding

What is the main product formed at the anode during the electrolysis of a solution containing Mn²⁺ ions using inert electrodes?

• Oxygen gas
• Manganese metal
• Hydrogen gas
• Permanganate ions

What is the main product formed at the cathode during the electrolysis of a solution containing Mn²⁺ ions?

• Manganese metal
• Oxygen gas
• Hydrogen gas
• Permanganate ions

What is the charge on the permanganate ion?

• 1-
• 2-
• 1+
• 2+

What is the charge on the manganate ion?

• 2-
• 1-
• 1+
• 2+