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    Chemistry
    Grade-9
    Easy

    Question

    How many electrons does potassium K contain?

    1. 19
    2. 39
    3. 20
    4. 40

    Hint:

    For a neutral atom number of proton is equal to number of electron.

    The correct answer is: 19

      • For a neutral atom number of proton is equal to number of electron.
      • Atomic number = number of protons.
      • Atomic number of potassium is 19, hence number of electron is 19.

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