d and f BLOCK ELEMENTS

What trend is generally observed when comparing the enthalpies of atomisation of first series transition metals to second and third series?

• First series have greater values
• Second and third series have greater values
• All series have equal values
• It varies randomly

Why do metals with high enthalpies of atomisation often have high boiling points?

• Weak interatomic forces
• Strong interatomic forces require more energy to overcome
• Low density
• High vapour pressure

What is the primary factor determining the strength of bonding in transition metals according to the text?

• Atomic mass
• Number of valence electrons
• Nuclear charge alone
• Electronegativity

How does the enthalpy of atomisation relate to the boiling point of a metal, according to the text?

• High enthalpy of atomisation correlates with low boiling point
• High enthalpy of atomisation correlates with high boiling point
• There is no relationship
• It depends on the specific metal

What is the primary factor causing the decrease in ionic radius across a transition metal series, according to the text?

• Decreasing nuclear charge
• Increasing nuclear charge with poor d electron shielding
• Adding electrons to the outermost shell
• Effective shielding by d electrons