Elements, Ions, and Isotopes

Practice Questions

SAT Subject Test in Chemistry › Elements, Ions, and Isotopes

Questions
2
1

An atom of phosphorus has 15 protons, 16 neutrons, and 15 electrons. What is the atom's mass number?

2

An atom of phosphorus has 15 protons, 16 neutrons, and 15 electrons. What is the atom's mass number?

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