The use of the aufbau principle to predict the electron configurations of atoms (in their ground states), and therefore explain the layout of the p
A short piece arguing that hydrogen should head up group 4 (14) in the periodic table.
As part of the new 'How science works' programme of study for key stage 4 (14-16 year-olds) taught in England and Wales, alternative layo
The importance of molecular oxygen, atomic oxygen, ozone and the hydroxyl radical in the Earth's atmosphere.
Tim G. Harrison
The life of Joseph Priestley and the fascinating chemistry of one of the molecules that he discovered – dioxygen (O2).
Tippu S. Sheriff