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MCAT Biology

Category - Chemistry

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Which of the following describes a particle that contains 36 electrons, 49 neutrons, and 38 protons?

an ion with a charge of 2 -
an ion with a charge of 2 +
an atom with a mass of 38 amu
an atom with a mass of 49 amu

Explanation

Answer: B - an ion with a charge of 2 +

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