Strontium has a atomic number of 38 and a mass number of 88 how many neutrons are in one atom

Atomic number=number of protons (and electrons, but that doesn't matter in this answer)

Atomic mass=number of protons+number of neutrons

Atomic mass=atomic number+number of neutrons

Atomic mass-atomic number=number of neutrons

88-38=number of neutrons

number of neutrons=50