Why is the term mole officially abbreviated mol and not something shorter?
I can only offer you my best guess as to why mole is officially abbreviated mol. Here it is. Most scientific abbreviations (ever wonder why this word is so long?) are 1, 2 or 3 letters long. When possible, we try to use letters that are already in the full length word. The lower case m is already used for both mass and molality. Since mo. already designates month and ml (or mL) is taken to mean milliliters it seemed reasonable to go the three letter designation mol which saves us either 1 letter (mole) or 2 letters (moles). Also, capitalization of the m in mole doesnt work on two counts. First, mole is not the name of a person and generally, capital letters are assigned only for units that commemorate a person. (I know, there are violations of that rule.) Second, M already is used for molarity units or molar concentration units. You might ask your teacher if she/he knows why the label for liter is L. There is an interesting story behind that. If she/he doesnt know the story, have her/h