Chemistry, 04.08.2019 11:30 alleyeverett031

An element's atomic number is 40. how many electrons would an atom of this element have? an atom of element a has 111 protons. what would the element's atomic number be? how many neutrons does an element have if its atomic number is 55 and its mass number is 161?

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An element's atomic number is 40. how many electrons would an atom of this element have? an atom of...

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