Question

Oxygen has neutral isotope of 5 respectively, mass number of 16 and 18 given that the atomic number of oxygen is 8. What is the number of protons, neutrons and electrons of each atom?

Answer 1

For oxygen, which has an atomic number of 8, the number of protons is always equal to the atomic number. Therefore, each oxygen atom will have 8 protons.

1. Oxygen isotope with a mass number of 16:

   • Number of protons: 8 (atomic number)
   • Number of neutrons: Mass number - Number of protons = 16 - 8 = 8 neutrons
   • Number of electrons: Number of protons (in a neutral atom) = 8 electrons

2. Oxygen isotope with a mass number of 18:

   • Number of protons: 8 (atomic number)
   • Number of neutrons: Mass number - Number of protons = 18 - 8 = 10 neutrons
   • Number of electrons: Number of protons (in a neutral atom) = 8 electrons

To summarize:

For Oxygen-16:

• Protons: 8
• Neutrons: 8
• Electrons: 8

For Oxygen-18:

• Protons: 8
• Neutrons: 10
• Electrons: 8