List the charge, location, and mass of a proton, a neutron, and an electron.

1 answer:

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Atoms consist of protons, neutrons and electrons

Explanation:

There are three particles in an atom:

Proton: it is located in the nucleus. Its mass is $m_p = 1.6726\cdot 10^{-27}kg$ , and it is positively charged (its electric charge is $+1.6\cdot 10^{-19}C$ , also called fundamental charge)
Neutron: it is also located in the nucleus. Its mass is slightly larger than the proton ( $m_n = 1.6749\cdot 10^{-27}kg$ ), and it has no electric charge. Protons and neutrons are held together inside the nucleus by the strong nuclear interaction
Electron: it is located outside the nucleus, in a region called "electron cloud". According to quantum mechanics, its exact position cannot be determined, but it can only be described by a "wave function" which gives the probability of finding the electron at a certain position. Its mass is much smaller than the proton ( $m_e = 9.11\cdot 10^{-31} kg$ ) and it is negatively charged (its charge is the opposite of that of the proton: $-1.6\cdot 10^{-19}C$ ).