(d) The elements of Group I and II elements of the Periodic Table are called S-block elements, (i) Write the valence electronic configurations of the Groups I and II elements (i) How do the reactions of the Group II elements with water vary down the group? MeetLearn Explain the trend.

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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.