NO+ dissolved in various fluorobenzenes (IMAGE) University of Freiburg Caption The more hydrogen atoms are replaced by fluoride atoms, the lower the interaction of the positive ions with the electrons and the paler the colour of the solution. Credit Photo: Dr. Malte Sellin Usage Restrictions Please state copy right, Photo: Dr. Malte Sellin / Universität Freiburg License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.