The number of protons is equal to a the number of neutrons.
b the atomic mass.
c the number of electrons.
d the atomic number.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

What happens to isotopes that are unstable?