Transform the g into kg by multiplying 0.74 by 10^-3. then divide 2.4 kg by the density
5 protons and six neutrons
The correct statement is <span>(4) All atoms of a given element must have the same atomic number.
Atoms come in different isotopes(which have different mass), which differ in the number of neutrons, but are still the same element (this tells you why the other options are bad).
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The answer is A.) atoms! Gold itself is an element, which means that it is only made up of itself.
