**QUIZ 10 – Chapter 8** **Total time: 10 minutes**

### Part I. (8 points) Multiple-choice questions **Question 1:** According to the Octet Rule, atoms of elements react with each other in order to attain ______ electrons in their outermost energy level or shell? * **A.** 2 * **B.** 4 * **C.** 6 * **D.** 8 **Question 2:** Which of the following elements loses one electron to attain an octet? * **A.** Potassium * **B.** Helium * **C.** Calcium * **D.** Fluorine **Question 3:** Which of the following elements gains three electrons to attain an octet? * **A.** Aluminum * **B.** Boron * **C.** Nitrogen * **D.** Argon **Question 4:** Which of the following bonds is covalent and polarized? * **A.** $\text{Na} - \text{I}$ * **B.** $\text{Cl} - \text{Cl}$ * **C.** $\text{K} - \text{O}$ * **D.** $\text{H} - \text{F}$ ### Part II. (2 points) Long answer question **Question 5:** Which of the following skeleton structures is plausible? Give a full explanation of your choice. **1.** ``` H — O — Cl ``` **2.** ``` H — Cl — O ``` **3.** ``` Cl — H — O ``` **4.** ``` H — O \ / Cl ```