If the atomic number of potassium is 19, how many protons occur in the nucleus of a potassium atom?

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?