Consider the table. Metal Tm (K) AHFUS (kJ/mol) Tp (K) AHvap (kJ/mol) Li 454 2.99 1615 134.7 Na 371 2.60 1156 89.6 K 336 2.33 1033 77.1 Rb 312 2.34 956 69 Cs 302 2.10 942 66 Using the data, calculate A.Sfus and ASvap for Cs. K-mol ASyap = K-mol ASfus = TOOLS X10

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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.