Ions Quiz
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5 questions, one answer each
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1. A calcium atom loses two electrons. What is the charge on the ion?
- A. 1+
- B. 2+
- C. 2-
- D. 1-
2. How many electrons does a fluoride ion, F⁻, have? (Fluorine has atomic number 9.)
- A. 8
- B. 9
- C. 10
- D. 7
3. Which ion has the electron arrangement 2,8,8?
- A. Na⁺
- B. O²⁻
- C. Mg²⁺
- D. Cl⁻
4. Which atom forms an ion with a charge of 3+?
- A. Sodium, Group 1
- B. Magnesium, Group 2
- C. Aluminium, Group 3
- D. Nitrogen, Group 5
5. Which is true when an atom becomes a positive ion?
- A. It gains protons
- B. It loses electrons
- C. It gains electrons
- D. It loses neutrons