Input interpretation
gaseous elements (at STP) | CAS number
Table
hydrogen | 1333-74-0 helium | 7440-59-7 nitrogen | 7727-37-9 oxygen | 7782-44-7 fluorine | 7782-41-4 neon | 7440-01-9 chlorine | 7782-50-5 argon | 7440-37-1 krypton | 7439-90-9 xenon | 7440-63-3 radon | 10043-92-2