a) Explain the nitrogen rule.
b) Apply the nitrogen rule to the compounds below. Do not calculate molecular weights. Simply fill “even” or “odd” into the second column! C3H8 C6H12O2 C6H11NO C32H25N3O2S C8H20N2 C7H9N C3H6BrN C9H11ClN4O2 C17H32Cl2 ………. ………. ………. ………. ………. ………. ………. ………. ……….
Molecular composition
Monoisotopic mass is …
c) Consider a radical containing no nitrogen to be cleaved off from an even-mass molecular ion. Will the mass of the fragment be even- or odd-numbered?
d) Consider a molecule containing one nitrogen to be eliminated from a molecular ion containing two nitrogens. Will the mass of the fragment be even or odd-numbered?
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