AS & A Level Chemistry 3.3 Metallic bonding : Exam Style Questions Paper 1

Question

Why does ICl have a higher boiling point than Br₂?

A. because of the difference in the bond energies of the covalent bonds within ICl and Br₂ B. because of the difference in the polar nature of ICl and Br₂ C. because of the difference in the number of electrons contained within ICl and Br₂ D. because of the difference in the relative molecular mass of ICl and Br₂

▶️ Answer/Explanation

Solution

Ans: B

ICl has a higher boiling point than Br₂ because it is a polar molecule (due to the electronegativity difference between I and Cl), leading to stronger permanent dipole-dipole interactions. Br₂ is nonpolar and only has weaker London dispersion forces, even though both have similar molecular masses. Thus, the polar nature of ICl (Option B) is the correct explanation.

Question

The diagram shows part of the lattice structures of solids X and Y.

▶️Answer/Explanation

Ans: B

Question

Silver and iodine are both shiny crystalline solids.
Which forces exist between neighboring iodine molecules in solid iodine and particles in solid silver?

▶️Answer/Explanation

Ans:D

Question

For which substance is the type of bonding not correct?

▶️Answer/Explanation

Ans:

AS & A Level Chemistry 3.3 Metallic bonding : Exam Style Questions Paper 1

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