The structures of atoms differ in many ways. If you read through "what is the basic structure of an atom," you will already know that an atom consists of electrons, and a nucleus, where the protons and nuetrons reside. One way that you can differentiate between one element and another is by its atomic number. The atomic number of an element determines how many protons and electrons are present in the element. For example, if you take Hydrogen, whose atomic number is 1, you will already know that there is one proton, and one electron. To find out how many neutrons are present in the atom, you will also need to know the element's atomic mass, which is also 1. This leads you to the equation, 1(mass)-1(# of protons/electrons)= 0, so you know that there are no neutrons in Hydrogen.

This is the atomic structure of Cesium, whose atomic number is 55.
You can tell this by seeing the number of protons in the nucleus, which
is also 55. Also, Cesium's atomic mass is 132.9054, or if rounded up, 133.
If you take 55 (the number of protons/electrons present) and subtact
it from 133, you will find that the difference will be 78, the number
of neutrons.

  How are elements organized?

  What is the basic structure of an atom?