Question

Indicate the number of electrons, protons and neutrons in the element 39K.
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Answer 1

Each isotope has 19 protons and 19 electrons, but the number of neutrons vary. Potassium-39 has 20 neutrons, Potassium-40 has 21 neutrons and Potassium-41 has 22 neutrons. Therefore, each isotope of an element will have a different mass number but the same atomic number

Answer 2

Here Is Your Ans ⤵

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If the element is potassium (K) Atomic Number 19

✔Atomic Number = Number of Proton = Number of Electron

➡Number of Proton is 19

➡Number of electron is 19

✔number of Neutrons =atomic mass - proton

➡Number of neutrons = 39 - 19

➡Number of Neutrons = 20

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