an atom’s mass number is 13 and its atomic number is 6. how many neutrons are in its nucleus,

lithium, atom, isolated @ Pixabay

We will be calculating the number of neutrons in an atom’s nucleus. This is a question that many students ask themselves during their chemistry class. It is important to start with some background information about atoms so we can understand why they have different numbers of neutrons, and how this relates to atomic mass and atomic number. An atom’s mass number refers to the total number of protons and neutrons that are in its nucleus. The atomic number is a property only related to electrons, which gives it an integer value (the same electron can orbit more than one proton). The sum of these two values always equals the neutral charge on the whole atom. For example, hydrogen has both a +Z and -Z due to having a single proton for each neutron; this makes its charges zero so they cancel out with any other molecules they come into contact with. This is important because when we look at how atoms form chemical bonds, their bonding partner will also have opposite charges as them so together there would be no net charge between them overall like before.


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