El Adelantado de Segovia2 天
For the first time, we know the shape of electrons, thanks to a breakthrough in quantum physics
For the first time, scientists have figured out what an electron actually looks like while moving through a solid—a major ...
BBC1 年
Atomic number and mass number
Every chlorine atom has 17 protons and 17 electrons. It has 17 positive charges and 17 negative charges, meaning that it is neutral overall. Atoms of different elements usually have different mass ...