MCAS Chemistry Exam Practice

Category - Chemistry

Which of the following describes a particle that contains 36 electrons, 49 neutrons, and 38 protons?
  1. an ion with a charge of 2 -
  2. an ion with a charge of 2 +
  3. an atom with a mass of 38 amu
  4. an atom with a mass of 49 amu
Explanation
Answer: B - an ion with a charge of 2 +
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