Physics
Physics, 02.07.2020 21:01, plshelpme53

PLEASE HELP!! Determine the Z and A number for an atom with 20 protons, 19 neutrons and 18 electrons. What element would this be in the periodic table? Write the symbol for this atom with the Z and A numbers accordingly. Is this an atom or an ion? If an ion, what is the charge on it?

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PLEASE HELP!! Determine the Z and A number for an atom with 20 protons, 19 neutrons and 18 electrons...

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