1) A boron atom has 5 protons and 6 neutrons. Give its number of electrons 2) A potassium atom has 20 neutrons and 19 electrons. Give its number of protons 3) A nickel atom has 28 protons and 31 neutrons. Give its number of electrons 4) An arsenic atom has 33 electrons and 42 neutrons. Give its number of protons

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