"Hydrogen is an odourless, tasteless and colourless gas. It has an atomic number 1 with a relative atomic weight of 1.008. It has a melting point of -259°C and a boiling point of -253°C 1,2. Carbon-hydrogen bonds are the basis for organic chemistry 7."
"The discovery of deuterium (or heavy hydrogen) is due to Harold Clayton Urey, professor of chemistry at Columbia University; for this discovery, in 1934, he was awarded the Nobel Prize in Chemistry 9."