g For which ONE of the following molecules can a reasonable Lewis structure be drawn that has NO double or triple bonds? A) SO2 B) N2H4 C) C2H2 D) C2N2 E) COCl2

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?