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The C-C single bond has an energy of approximately

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In cyclopropenyl anion in the depicted geometry, in which carbon will be the extra electron?

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Tetramethylbutane has an eclipsed configuration mostly due to:

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With a bigger basis set the HF energy of a reaction A + B  C will be

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Which transition requires less energy?

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Which spin function can be a singlet?

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The coefficients of the SOMO of n-pentadienyl radical are (in Hückel):

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In Hückel, which one is correct?

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The “correspondence principle” says that

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A  bond can, in principle, be done between

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