Chem 1212 Exam 1 Questions And Answers 2025/2026

Chem 1212 Exam 1 Questions And Answers 2025/2026 1. Which of the following statements is TRUE? A) A covalent bond is formed through the transfer of electrons from one atom to another. B) A pair of electrons involved in a covalent bond are sometimes referred to as "lone pairs." C) It is not possible for two atoms to share more than two electrons. D) Single bonds are shorter than double bonds. E) A covalent bond has a lower potential energy than the two separate atoms. - Correct Answer-E) A covalent bond has a lower potential energy than the two separate atoms. 2. Place the following in order of decreasing magnitude of lattice energy. NaF RbBr KCl A) RbBr > NaF > KCl B) NaF > KCl > RbBr C) KCl > NaF > RbBr D) NaF > RbBr > KCl E) RbBr > KCl > NaF - Correct Answer-B) NaF > KCl > RbBr 3. Choose the compound below that should have the highest melting point according to the ionic bonding model. A) AlN B) MgO C) NaF D) CaS E) RbI - Correct Answer-A) AlN 4. Place the following elements in order of increasing electronegativity.