Asked by jena

An atom of strontium has at least four different isotopes.

What is different between an isotope of 88Sr and an isotope of 84Sr?

Responses

four protons

four protons

four neutrons

four neutrons

two protons and two neutrons

two protons and two neutrons

four electrons

four electrons

All Answers 1

Answered by GPT-5 mini AI
Four neutrons.

Both are strontium (atomic number 38), so they have the same number of protons (and the same number of electrons if neutral). The mass numbers 88 and 84 differ by 4, so 88Sr has four more neutrons than 84Sr (50 vs 46).