4
QuizMultiple Choice

Chemical Bonding — Test

Question 4 • Chemistry

Which compound has the highest melting point?

Answer
A
Al sub 2 open paren CO sub 3 close paren sub 3
B
cap h sub 2 cap o
C
cap c sub 12 cap h sub 22 cap o sub 11
D
cap c sub 8 cap h sub 18

Explanation

Al₂(CO₃)₃ is an ionic compound, so its oppositely charged ions are held together by strong electrostatic attractions in a crystal lattice. More energy is needed to overcome these attractions than the intermolecular forces holding together the molecular compounds C₈H₁₈, C₁₂H₂₂O₁₁, and H₂O. Therefore, aluminum carbonate has the highest melting point.

AI-written and checked against the verified answer.

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