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Proton's charge
positive
Proton's Location
Nucleus
Proton's mass
1 atomic mass unit
Electron's mass
< 1 atomic mass unit
Electron's Location
Electron Cloud
Electron's Charge
negative
Neutron's Charge
neutral
Neutron's Location
Nucleus
Neutron's Mass
1 atomic mass unit
The smallest particle of an element is called
Atom
The first subatomic particle discovered
electron
The subatomic particle discovered by James Chadwick.
Neutron
The first person to put forward the theory of atoms?
Democritus
The subatomic particle discovered by Ernest Rutherford?
Proton
Electrons are found in specific locations called.
Shells
