7. In which pair would both compounds have the same empirical formula? A) K½CrO4 and K2Cr2O7 B) FeCl3 and FeCl2 21 12675 C) C2H4 and C3H6.012 Na Na. D) NaHCO3 and Na2CO3

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UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.