d and f BLOCK ELEMENTS

Why does Copper (Cu) have a lower enthalpy of atomisation than Nickel (Ni)?

• Copper has a larger atomic radius
• Copper is denser
• Its filled 3d subshell provides less contribution to metallic bonding
• Nickel has a higher ionization enthalpy

Based on Table 4.2, what is the approximate ionic radius of V2+?

• 79 pm
• 74 pm
• 70 pm
• 64 pm

What is the electronic configuration of the Sc+ ion?

• [Ar] 3d1
• [Ar] 4s2
• [Ar] 3d1 4s1
• [Ar] 3d2

Why is the second ionization enthalpy of Zinc (Zn) lower than its first ionization enthalpy?

• Zinc loses an electron from a filled subshell first
• Zinc has a low atomic number
• This statement is incorrect; the second ionization enthalpy is higher
• The first electron is removed from a higher energy level

According to Table 4.2, what is the approximate density of Manganese (Mn)?

• 7.19 g cm–3
• 7.21 g cm–3
• 7.8 g cm–3
• 6.07 g cm–3