All Categories should be set before changing the status to closed or canceled. 2.8 A SSIGNING AN I NCIDENT TO A NOTHER G ROUP 1. Click the drop down triangle next to Assigned Group 2. Hover over the appropriate C ampus 3. Hover over the appropriate Support Organization 4. Click on the appropriate Support G roup 5.
Free radicals can be defined as chemical species which have a single unpaired electron. In the important case (for organic chemistry) of the methyl radical, the radical center is trivalent and trigonally hybridized (Scheme 1). The sp2 hybridized carbon atom and the three hydrogens are coplanar and the unpaired (odd) electron occupies a 2p carbon atomic orbital (AO), here arbitrarily designated as 2pz.
Answers. Best Answer: The spontaneous isomerization of a nitrogen base to an alternative hydrogen-bonding form, possibly resulting in a mutation. Reversible shifts of proton position in a molecule. Bases in nucleic acids shift between keto and enol forms or between amino and imino forms. Base substitutions are generally caused by changes in the way that nucleotides base pair. One way this occurs is through tautomeric shifts.