10. The unit cell of ammonium chloride is similar to the unit cell of CsCl. Please consult class notes. Given that R(CI') = 0.181 nm, estimate the corresponding possible range of ionic radii for the NH,* ion.

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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.