Question

Two isotopes of oxygen are and 18/8O and 16/8O

Describe the similarities and differences between the isotopes
You should refer to the numbers of sub-atomic particles in each isotope.

Answer 1

Answer: Oxygen-16 and oxygen-18 differ in the number of neutrons in their nuclei. Oxygen-16 has 8 neutrons, while oxygen-18 has 10 neutrons.

Explanation: Oxygen-16 and oxygen-18 have the same number of protons and electrons. Both neutrons and protons have mass, so changing the number of neutrons changes the mass of oxygen.