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.
See the periodic table of elements, e.g. in: So in total, 58 protons, neutrons, and electrons. http://en.wikipedia.org/wiki/Periodic_table#Methods_for_displaying_the_periodic_table Argon has 18 protons and 22 neutrons. well a argons atomic number is 18 that means there are 18 protons&electrons the neutrons are usaly the same.  Argon The number of protons in an atom of an element will always be the same as the atomic number. The atomic number can be found on any periodic table, and in this case, the answer is 18.