Sub-atomic particle with a negative charge, proton, electron, neutron, nucleus, Sub-atomic particle with a positive charge, proton, electron, neutron, nucleus, Electrons are found in ..., electron shells, beside proton, nucleus, in the middle of the atom, Sub-atomic particle with no charge, proton, nucleus, electron, neutron, Proton and neutron are found in the ..., Nucleus, Outside of the atom, Electron shells, Periodic table, In a correctly written symbol what would be located in the "A" position?, number of neutrons, atomic number, number of electrons, mass number, The smallest part of an element that can exist. All substances are made of these, compound, mixture, ion, atom, In atom, the number of protons is equal to the number of ..., electron, neutron, neuron, energy levels, An atom with atomic number 6, would have how many protons?, 6, 12, 3, cannot be determined, How many electrons does an atom of Sodium (Na) have if the atomic number is 11 and the charge is +2, 12, 11, 10, 2.

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