What is the mass number of potassium-39? What is the isotope's charge?
explainn tooo. Im confused.
- caroline mLv 61 decade agoFavorite Answer
the mass of K39 is 39. the charge is 0 because it is a neutral atom.
the mass of any element is equal to the number of protons + neutrons. unless the element has a + or - next to it, it is neutral
- Anonymous4 years ago
isotope means it's not a atom my dude