Answer:
an atom with eight protons and seven electrons
an atom with eight protons and eight electrons
an atom with eight protons and no electrons
Explanation:
To tell atoms of the same element, it is safe to look at the number of protons. In neutral atoms, the number of protons will be equal with that of electrons but nonetheless, electrons are easily knocked out of their orbit to create charged atoms. Neutrons, on the other hand, can slightly vary in number creating different isotopes of the element. Changing the protons would change the atom into that of another element. Protons, therefore, are used to place an element on the periodic table.
