Atoms, Elements and Compounds

Question 1

State the relative charges and approximate relative masses of protons, neutrons and electrons

Answer 1

• Protons:
  
  • Charge: +1
  • Mass: 1
• Neutrons
  
  • Charge: 0
  • Mass: 1
• Electrons
  
  • Charge: -1
  • Mass 1/1200

Question 2

Define proton number and nucleon number