(4) Introduction to quantum mechanics, statistical mechanics and molecular spectroscopy. This course may be taken before (CHM 342 or CHM 3420). (Formerly CHM 343) Prerequisite(s): (CHM 145 or CHM 1450) and (CHM 148 or CHM 1480), (MTH 155 or MTH 1555) and (PHY 152 or PHY 1520) and (PHY 111 or PHY 1110)