Describing an atom or ion that has only one electron; for example, H, He+, Li2+, C5+. Hydrogenic atoms (or ions) do not involve electron-electron interactions and are easier to treat theoretically.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。