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41. A neutron atom of potassium has an atomic number of 19 and an atomic mass number of 39. Find its number of protons, neutrons, and electrons.

This is what I got-
Protons: 19
Neutrons: 20
Electrons: ?


  • Chemistry -

    I assume you means a "neutral" and not neutron atom .....
    Your are right. Protons 19, neutrons 20. If the atom is neutral, and protons are +1 charged and electrons -1 charged, would electrons be the same as protons. That is ALWAYS true for neutral atoms.

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