무료 Mass number - protons and neutrons - Question 애니메이션

Mass number - protons and neutrons - Question All atoms have a property known as their **mass number**, for example the most common isotope of carbon is carbon-12, which has a mass number of 12.

Mass number - protons and neutrons - Question All atoms have a property known as their **mass number**, for example the most common isotope of carbon is carbon-12, which has a mass number of 12.