Madrid PAU General Sciences Practice Questions - Madrid PAU General Sciences Examination - UCM (Ciencias Generales 2o Bachillerato 2026) Exam

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A neutral atom of the chlorine-35 isotope (atomic number Z = 17, mass number A = 35) contains which composition of subatomic particles?

17 protons, 18 neutrons, and 17 electrons 17 protons, 35 neutrons, and 17 electrons 18 protons, 17 neutrons, and 18 electrons 35 protons, 17 neutrons, and 35 electrons

Correct Answer:

17 protons, 18 neutrons, and 17 electrons

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