The nucleus is very small compared to the atom as a whole: as electrons are even smaller, most of an atom is empty space the diameter of a nucleus can be 100,000 times less than the diameter of an ...

An atom of oxygen is neutral and so will have 8 electrons. Two electrons will fill the first shell.The remaining 6 electrons will go into the second shell. The electronic structure of oxygen is ...

Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly the same consistency throughout, with negatively-charged electrons scattered about in it like raisins in a pudding.

Catalysts do several surprising things to assist with daily life – from bread making to turning raw materials into fuels more ...

Novel membrane technology achieves precise separation of near-identical molecules using atomic-scale structural control, ...