Respuesta :

superman1987

Answer:

Protons and electrons: 38.

Neutrons: 45.

Explanation:

  • Isotopes are found from differ in the number of neutrons and found by different proportions according to its stability (half-life time).
  • Sr⁸³ has a very low % of occurrence.
  • Any type of Sr isotope must contain 38 electron and proton.
  • The remaining from its mass is the number of neutrons.
  • So, the number of neutrons in Sr⁸³ are 45 neutrons.