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Noble gas atoms are also the only ones regularly found as isolated atoms in the ground state. The best suggestion to crack any exam is to go through the textbooks written by authorities in the respective fields. Absorption spectra and chemical structures of some common food dyes, which may be in your drink mix, are shown in the following pages. In Dye B, for example, each of the 5 carbon atoms can be thought of as contributing 1 electron, the positively charged nitrogen also contributes 1 electron, and the lone pair on the second nitrogen contributes 2 electrons; for Dye B there are 8 delocalized electrons.

Pages: 250

Publisher: Ulan Press (August 31, 2012)


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