d and f BLOCK ELEMENTS

What is the electronic configuration of the Ho³⁺ ion?

• 4f⁹
• 4f¹⁰
• 4f¹¹
• 4f¹²

What is the electronic configuration of the Dy³⁺ ion?

• 4f⁸
• 4f⁹
• 4f¹⁰
• 4f¹¹

What is the electronic configuration of the Tb³⁺ ion?

• 4f⁷
• 4f⁸
• 4f⁹
• 4f¹⁰

What is the approximate ionic radius of Ce⁴⁺?

• 100 pm
• 101 pm
• 103 pm
• 105 pm

What is the approximate ionic radius of Ce³⁺?

• 101 pm
• 102 pm
• 103 pm
• 105 pm