永利集团官方网站入口

Atomic disguise makes helium look like hydrogen

作者:井殁崭    发布时间:2019-03-07 07:07:03    

By Kate McAlpine IN A feat of modern-day alchemy, atom tinkerers have fooled hydrogen atoms into accepting a helium atom as one of their own. The camouflaged atom behaves chemically like hydrogen, but has four times the mass of normal hydrogen, allowing predictions for how atomic mass affects reaction rates to be put to the test. A helium atom is made up of a nucleus containing two positively charged protons and two neutrons,

 

Copyright © 网站地图