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 Peter 
          G. NELSON 
 ABSTRACT: The modification to Lewis's theory of valency proposed in Part 1 is extended to molecules containing coordinate bonds. A further modification to the theory is proposed to make it applicable to molecules containing nonintegral bonds (e.g., B2H6). [Chem. Educ. Res. Pract. Eur.: 2001, 2, 179-182] KEY WORDS: Lewis theory; coordinate bond; nonintegral bond; valence shell; Lewis shell; fractional pair 
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