1.2    Isotopes

Isotopes

• Isotopes are atoms of the same element with the same number of proton but different number of

Example:

• Isotopes have the same:
  1. number of protons and electrons
  2. electronic configuration
  3. chemical properties(because they have the same number of electrons)

• Isotopes have different:
  1. number of neutrons and nucleon number
  2. mass
  3. density
  4. molecular speed

• Isotopes can be stable or Unstable isotopes are called radioactive isotopes(radioisotopes).