CH-211
Proton and nucleon numbers
Chemistry · Secondary 3 · Easy · Proton and nucleon numbers
An element X has 15 protons, 16 neutrons and 15 electrons. What are its nucleon number and proton number?
- Nucleon number 31, proton number 15
- Nucleon number 16, proton number 15
- Nucleon number 30, proton number 15
- Nucleon number 31, proton number 16
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