Question

How many protons, electrons, and neutrons does Strontium-38 have?

Answer 1

Strontium has 38 protons (necessarily!), and 38 electrons (necessarily), and has generally 48, 49, or 50 neutrons depending on the isotope.

Explanation:

For strontium, `Z` `=` `38`. There are 38 positively charged particles in its nucleus. Because the element is neutral, there must be a corresponding number of electrons, negatively charged particles, orbiting the nucleus. It atomic mass is `87.62` `g*mol^-1`. `""^86Sr`, `""^87Sr`, `""^88Sr`, isotopes are common. These isotopes MUST have 48, 49, or 50 neutrons respectively in the nuclei.