Answer Happy

Match the description of a process with the corresponding diagram: a. b. d. Eg E2 Eg E, Eg E, Eg E, E E E E E E E E Emission of a photon whose energy is E 2-EO Absorption from an excited state (this hardly ever happens in dark-line spectrum absorption experiments at low temperatures, because an excited state drops back to the ground state so quickly that there is never a significant number of atoms in an excited state capable of absorbing the photon) Emission of a photon whose energy is E 3-E 1 Absorption of a photon whose energy is E 1 - E O ("dark-line" spectrum)
In drawing arrows to represent energy transitions, which of the following statements are correct? For emission, the arrow points down. For absorption, the arrow points up. The head of the arrow is drawn on the final state. The tail of the arrow is drawn on the initial state. It doesn't matter which direction you draw the arrow as long as it connects the initial and final states.