d and f BLOCK ELEMENTS

What is the approximate ionic radius of Pr³⁺?

• 99 pm
• 100 pm
• 101 pm
• 103 pm

What is the approximate atomic radius of Samarium (Sm)?

• 179 pm
• 180 pm
• 181 pm
• 182 pm

What is the name of the element with symbol Yb?

• Yttrium
• Ytterbium
• Yobium
• Yerbium

What is the name of the element with atomic number 71?

• Lutetium
• Lawrencium
• Lithium
• Lanthanum

What is the symbol for Thulium?

• Th
• Tl
• Tm
• Tu