The noble gases (Helium, Neon, Argon etc.) were not discovered until much later ... Unfortunately for Meyer, his work wasn’t published until 1870, a year after Mendeleev’s periodic table had been ...

Zahra Khan finds out how a team of scholars is working with the Gadigal to develop a chart that celebrates Indigenous ...

neon and xenon (1898). It was debated whether the 'inert' monoatomic gases belonged to the periodic table owing to their lack of 'chemical properties'; elements coming late to the party ...