BBC4 年
Metals and non-metals in the periodic table
Elements in group 1 and group 2 are metals. Atoms of group 1 elements have one electron in their outer shell, and atoms of group 2 elements have two electrons in their outer shell. Elements in ...
来自MSN6 个月
Scientists discover unexpected behavior in dimers of CO₂ molecules after ionization
In environments such as cold outer space and atmospheric settings, carbon dioxide molecules often form ... Physics (Germany), and the FLASH free electron laser facility at DESY (Germany) have ...