A potassium atom has how many protons and electrons?
A potassium atom has 19 protons.
An uncharged atom therefore has 19 electrons, but
in solution many potassium atoms exist as ions (K+), with 18
How many protons electrons and neutrons does a potassium atom that has an atomic number of 19 and a mass number of 39?
A neutral atom with 49 electrons will have 49 protons. The number of protons and electrons are always the same in a neutral atom. If the number of protons is not matched by the number of electrons, then the atom is charged and is called an ion. Further, if protons outnumber electrons, the atom is positively charged and is a positive ion. For situations where electrons outnumber protons, the opposite is true. The element with…