[Answer] How many neutrons make up one of these potassium atoms?

Answer: 20

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How many neutrons make up one of these potassium atoms? To find the number of neutrons you take the atomic mass 39 and subtract the number of protons 19. so 39-19=20. potassium has 20 neutrons . One isotope of sodium has 11 protons and 7 neutrons . What is the mass number of this isotope? All atoms of the element potassium have 19 protons. One of the most stable types of potassium atoms has the mass number 39 . How many neutrons make up one of these potassium atoms? Number of neutrons in potassium atoms is 20 . Explanation: Given that Number of protons in all atoms of Potassium Z = 19. Mass number of potassium atom A = 39. We need to find the number of neutrons make up one of these potassium atoms. We know that the mass of an atom is equal to the sum of number of protons and number of neutrons. So A = Z + N How many neutrons make up one of these potassium atoms ? One isotope of sodium has 11 protons and 7 neutrons . All atoms of the element potassium have 19 protons . One of the most stable types of potassium atoms has the mass number 39 . How many ne...

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