Determine the pressures of two grams (each) of gaseous H2, He, N2 and Ar, where each sample is contained in a volume of five liters at 0 degrees centigrade. Which sample has the greatest pressure under the conditions stated? Which sample has the least?

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.