Medical Definition of HYDANTOIN. 1. : a crystalline weakly acidic imidazole derivative C3H4N2O2 with a sweetish taste that is found in beet juice and used in organic synthesis.2. : a derivative of hydantoin (as phenytoin).What made you want to look up hydantoin?. : a crystalline weakly acidic imidazole derivative C3H4N2O2 with a sweetish taste that is found in beet juice and used in organic synthesis. 2. : a derivative of hydantoin (as phenytoin).
Fun Facts About Argon. Argon is one of the many elements in the Periodic Table. Its normal phase is gas, and it is in the family of Noble Gases. Its symbol is Ar., and its atomic number is eighteen. There are also eighteen protons, twenty-two neutrons, and eighteen electrons in argon. This element boils at -186.0 degrees Celsius and melts at -189.3 degrees Celsius.
The number of neutrons is 22 (for the most stable isotope of argon, Ar-40) because you subtract the atomic mass from the atomic number then estimate! The most common isotop â¦ e of Argon, 40Ar, (comprising about 99.6% of all naturally occurring Argon) has 22 neutrons 18 electrons 18 protons. Argon has 24 known isotopes ranging from 30Ar (with 12 neutrons) to 53Ar (with 35 neutrons).