The Hill system is a system of writing chemical formulas such that the number of carbon atoms in a molecule is indicated first, the number of hydrogen atoms next, and then the number of all other chemical elements subsequently, in alphabetical order. When the formula contains no carbon, all the elements, including hydrogen, are listed alphabetically. This deterministic system enables straightforward sorting and searching of compounds.
Read more about this topic: Chemical Formula
Famous quotes containing the words hill and/or system:
“The longer a woman remains single, the more apprehensive she will be of entering into the state of wedlock. At seventeen or eighteen, a girl will plunge into it, sometimes without either fear or wit; at twenty, she will begin to think; at twenty-four, will weigh and discriminate; at twenty-eight, will be afraid of venturing; at thirty, will turn about, and look down the hill she has ascended, and sometimes rejoice, sometimes repent, that she has gained that summit sola.”
—Samuel Richardson (1689–1761)
“Never expect any recognition here—the system prohibits it. The cross is not affixed to the genius, no, the genius is affixed to the cross.”
—Franz Grillparzer (1791–1872)