4. Rank the following compounds in order of increasing basicity. Label the least basic compound "1" and the most basic compound "4". Place the number corresponding to the compound's rank in the blank below the compound. NH2 NH2 CH,NH2 NH2 H3C CH3 CF3

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Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.