Which elements will bond ionically with barium such that the formula would be written as bax2? a) nitrogen, chlorine, and sodium eliminate b) chlorine, iodine, and fluorine c) hydrogen, bromine and aluminum d) oxygen and sulfur

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system