Unit1:Structure,Bonding and Introduction to Organic Chemistry Unit2:Energetics, Group Chemistry, Halogenoalkanes and Alcohols Unit3:Practical Skills in Chemistry I Unit4:Rates, Equilibria and Further Organic Chemistry Unit5:Transition Metals and Organic Nitr...
Revision for Edexcel Chemistry (A) AS and A Level Papers, including summary notes, worksheets and past exam questions for each topic.
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The electron pairs that participate in acovalent bondare called bonding pairs or shared pairs. Typically,sharing bonding pairsallows each atom to achieve a stable outer electron shell, similar to that seen in noble gas atoms. Polar and Nonpolar Covalent Bonds ...
Hydrogen bonding (H-bonding) of water molecules confined in nanopores is of particular interest because it is expected to exhibit chemical features different from bulk water molecules due to their interaction with the wall lining the pores. Herein, we show a crystalline behavior of H-bonded water...
However, the mechanisms of CAP action are not well understood at a molecular level. Since the first report about the killing effect of a plasma jet on HNC in 2012 [37], the field of CAP application in this type of cancer treatment has expanded rapidly. In metastatic or recurrent HNC ...
(F) for the main effects, which are called also the influence efficiencies. The data in the columns ofTable 4(P) are interpreted similarly. The influence of the variance source on the output parameter is considered to be statistically significant if its significance level is lower than a ...
The exceptional stability of 2 is ascribed to internal H-bonding. Species 2 is also generated in a manner not previously known in copper chemistry, by adding 1.5 equiv of H2O2 (no base) to the cuprous complex [(BA)CUI]+. The broad implications for this finding are discussed. Species 2 ...