Question

1. substance a is a gas, substance b is a liquid and substance c is a solid. all of the substances are at the same temperature and pressure. which of the following shows the correct relationship of the strength of the intermolecular forces in each substance? a. a > b > c b. b > a > c c. c > b > a d. c > a > b which statements are true concerning ionic bonds? select two correct answers. a. ionic bonds form through the sharing of electrons between two atoms. b. ionically bonded compounds have low melting and boiling points. c. ionic bonds form through the donation of electrons from one atom to the other. d. ionic bonds form between two nonmetals. e. ionically bonded compounds have high melting and boiling points.

Explanation:

First Sub - Question (Intermolecular Forces)

Step1: Recall Intermolecular Force and State Relationship

Intermolecular forces are strongest in solids, weaker in liquids, and weakest in gases at the same temperature and pressure. Substance A is gas, B is liquid, C is solid. So the order of intermolecular force strength should be \( C > B > A \).

Step2: Match with Options

Option C shows \( C > B > A \), which matches our deduction.

• Option A: Ionic bonds involve electron transfer, not sharing (covalent bonds share electrons), so A is false.
• Option B: Ionic compounds have high melting/boiling points due to strong ionic bonds, so B is false.
• Option C: Ionic bonds form when one atom donates electrons to another (metal to non - metal), so C is true.
• Option D: Ionic bonds form between metal and non - metal, not two non - metals (covalent for two non - metals), so D is false.
• Option E: Ionic compounds have high melting and boiling points because of strong electrostatic forces between ions, so E is true.

Answer:

C. \( C > B > A \)

Second Sub - Question (Ionic Bonds)