Number of protons,electrons and neutrons in potassium 197
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the Periodic Table tells us that potassium has an Atomic Number of 19, so there are 19 protons and 10 electrons. The Periodic Table tells us that potassium has an Atomic Mass of ≈39. So there are 39 - 19 = 20 neutrons.
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Answer:
no of protons and electrons is 19
no of neutrons is 39 -19
20
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