![]() In this model n = ∞ corresponds to the level where the energy holding the electron and the nucleus together is zero. Absorption is the process where the electrons of a substance absorb or take up the energy wavelengths incident on them. (b) When the light emitted by a sample of excited hydrogen atoms is split into its component wavelengths by a prism, four characteristic violet, blue, green, and red emission lines can be observed, the most intense of which is at 656 nm. It shows that galaxies are moving away from us in an expanding Universe. (a) A sample of excited hydrogen atoms emits a characteristic red light. ![]() ![]() The level of emission of a substance depends on its spectroscopic composition and temperature. WJEC The Universe The study of atomic absorption spectra allows us to determine the chemical make-up of stars. All of the frequencies or wavelengths of electromagnetic radiation (lowest to highest). \) is the Rydberg constant in terms of energy, Z is the atom is the atomic number, and n is a positive integer corresponding to the number assigned to the orbit, with n = 1 corresponding to the orbit closest to the nucleus. Study with Quizlet and memorize flashcards containing terms like When light released as a result of electrons falling back down to the ground state is. Emission is the process where a substance gives off or emits radiation when it is heated or treated chemically. ![]()
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