SSLC Chemistry Practice Questions - Samoa Secondary Leaving Certificate - Chemistry Exam

A neutral atom of magnesium-24 has atomic number 12. How many protons, neutrons, and electrons does it contain?

12 protons, 12 neutrons, 12 electrons 12 protons, 24 neutrons, 12 electrons 24 protons, 12 neutrons, 24 electrons 12 protons, 12 neutrons, 24 electrons

Correct Answer:

12 protons, 12 neutrons, 12 electrons

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