Potassium's atomic number is 19, which is the number of protons in the nucleus. In a neutral atom, the number of protons also equals the number of electrons. So a neutral potassium atom has 19...
Potassium (K) has 19 electrons in its neutral atom and therefore the potassium ion has 18 electrons and a positive charge.
proton number remains the same i.e. 19 only electrons will vary
Any ion of potassium has 19 protons
3.