The atom with 19 protons is Potassium (K), which has an atomic number of 19. In its neutral state, an atom has an equal number of protons and electrons. Since this atom has 19 protons and 19 electrons, it is electrically neutral.
Moreover, the atom also has 20 neutrons. The number of neutrons in an atom contributes to its mass but does not affect its charge. To find the atomic mass, you add the protons and neutrons together: 19 protons + 20 neutrons = 39, which means this specific isotope of potassium is Potassium-39.
So, to summarize, the atom is Potassium (with 19 protons and 19 electrons) and has a charge of 0, meaning it is neutral.