Zadania z chemii IB SL

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Lithium can be identified in the light emitted by stars and by flames containing lithium compounds. (i) Outline the appearance of the emission spectrum of lithium. The emission spectrum of a one-electron species, such as the $\ce{Li^2+}$

ion, can be explained…

Which electron transition in a hydrogen atom emits radiation with the longest wavelength? A. $n = 2$ to $n = 1$ B. $n = 3$ to $n = 2$ C. $n = 4$ to $n = 3$ D. $n = 1$ to $n = 4$