Question: how many electrons does silicon 30 have?
Answer: Si-28– Protons: 14 (atomic number)Neutrons: (mass number-atomic number) 28-14= 14Electrons: 14Si-29- Protons: 14Neutrons: (mass number-atomic number) 29-14= 15Electrons: 14Si-30- Protons: 14Neutrons: (mass number-atomic number) 30-14= 16Electrons: 14 3.