Atoms contain three sub-atomic particles called protons, neutrons and electrons. The protons and neutrons are found in the nucleus at the centre of the atom. read more
The protons and neutrons are found in the nucleus of every atom. Electrons (negatively charged) are found in a cloud surrounding the nucleus of every atom. read more
It is made up of two different types of particles called protons and neutrons, represented as red and blue spheres in the image. The number of each is actually what determines the atomic number of an element. read more
Rutherford called these uncharged particles neutrons, by the Latin root for neutralis (neuter) and the Greek suffix -on (a suffix used in the names of subatomic particles, i.e. electron and proton). References to the word neutron in connection with the atom can be found in the literature as early as 1899, however. read more