Atomic structure and isotopes Quiz
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5 questions, one answer each
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1. How many neutrons are in an atom of ⁵⁶Fe (atomic number 26)?
- A. 26
- B. 30
- C. 56
- D. 82
2. Which particle has a relative charge of −1?
- A. Proton
- B. Neutron
- C. Nucleus
- D. Electron
3. Which pair are isotopes of the same element?
- A. ¹⁴₆X and ¹⁴₇Y
- B. ¹²₆X and ¹⁴₆Y
- C. ²³₁₁X and ²⁴₁₂Y
- D. ¹⁶₈X and ¹⁶₈Y⁺
4. How many electrons are in the ion ¹⁶O²⁻ (Z = 8)?
- A. 6
- B. 8
- C. 10
- D. 16
5. Two isotopes of an element react in the same way because they have the same…
- A. mass number
- B. number of neutrons
- C. number of electrons
- D. density