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All atoms of the element vanadium must have the same


All atoms of the element vanadium must have the same (1) atomic number (2) mass number (3) number of neutrons plus electrons

(4) number of protons plus neutrons


Answer and explanation: All atoms of the same element must have the same atomic number. Atomic number is like a social security number. It is unique to each element. Therefore, choice 1 is the correct answer choice.


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