ORELA Chemistry (NT321) Practice Questions - Oregon Educator Licensure Assessments Chemistry (NT321) Exam

An atom has 17 protons, 18 neutrons, and 17 electrons. Which description is correct?

It is a neutral chlorine atom with mass number 35. It is a chloride ion with mass number 17. It is a neutral argon atom with mass number 35. It is a chlorine isotope with atomic number 18.

Correct Answer:

It is a neutral chlorine atom with mass number 35.

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