**QUIZ 2 – Chapter 2** **Total time: 10 minutes**

**Part I. (8 points) Multiple choice questions** **Question 1:** Which of the following species contains 16 neutrons. A. $^{31}\text{P}$ B. $^{34}\text{S}^{2-}$ C. $^{36}\text{Cl}$ D. $^{80}\text{Br}^{-}$ **Question 2:** Which of the following statements is true A. All elements in a period have the same number of electron shells B. All elements in a period have the number of electrons in the outmost shell C. The stable ions of all elements in a period have the same charge D. Periods are vertical columns (down) the periodic table. **Question 3:** The elements in groups 1A, 2A, and 6A are called, \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_, respectively. A. alkaline earth metals, halogens, and chalcogens B. alkali metals, alkaline earth metals, and chalcogens C. alkali metals, halogens, and noble gases D. alkaline earth metals, transition metals, and halogens **Question 4:** Predict the charge of the most stable ion of potassium. A. +3 B. -1 C. +2 D. +1 **Part II. (2 points) Long answer question** **Question 5:** Are there how many protons, neutrons, and electrons in $^{131}\text{I}^{-}$. Explain your answer.