View Full Version : R or S configuration


atlanta213
07-10-2008, 10:00 PM
When you find R or S configuration, How do you determine the priority?
ex: O, Cl,S, N

osimsDDS
07-10-2008, 10:11 PM
i always thought it was MW, but i might be wrong...

TheGreenWave
07-10-2008, 10:12 PM
i always thought it was MW, but i might be wrong...

thats right, look at a periodic table, the highest MW = highest priority :thumbup:

osimsDDS
07-10-2008, 10:14 PM
but let me just go out there and say this, you probably already know this but its not the biggest molecule or the most MW of the molecule, its the MW of the atom attached to the C atom...you can have CH2CH2CH2CH2CH2CH2CH2CH2CH3 and NH2 would still have a higher priority...

TheGreenWave
07-10-2008, 10:16 PM
but let me just go out there and say this, you probably already know this but its not the biggest molecule or the most MW of the molecule, its the MW of the atom attached to the C atom...you can have CH2CH2CH2CH2CH2CH2CH2CH2CH3 and NH2 would still have a higher priority...

yup, i guess its good to be clear that we are talking about the atom.

osimsDDS
07-10-2008, 10:18 PM
yea trying to get all the common misconceptions out of the waaayy

TheGreenWave
07-10-2008, 10:20 PM
hey osims, have you worked all the destroyer problems?? also are you using topscore or achiever??

july 19 = dat = im nervous haha

osimsDDS
07-10-2008, 11:15 PM
hey osims, have you worked all the destroyer problems?? also are you using topscore or achiever??

july 19 = dat = im nervous haha

haha dude july 18th = dat = im nervous

Ive worked through destroyer like 3 times each section, its great i feel like i need to take this thing already im kinda bored right nowwww and dont really feel like studying at all..

TheGreenWave
07-10-2008, 11:20 PM
haha dude july 18th = dat = im nervous

Ive worked through destroyer like 3 times each section, its great i feel like i need to take this thing already im kinda bored right nowwww and dont really feel like studying at all..

Wow good for you man! Ive just now finished destroyer once through. man what a battle haha, but that thing is money. for bio and orgo i did well and got most of them; im sure the second time through ill get even more. gen chem is another story though, balls.

how did your topscore tests go?? i want to compare with other people on the forums... especially those that are always answering questions like yourself haha

atlanta213
07-10-2008, 11:23 PM
Osimsdds, greenwave Good luck guys! you guys are always helping me out.

"When" I become a dentist, I will fill you guys cavity since you can not take care of your own teeth. Oh absolutely NO CHARGE!:D

TheGreenWave
07-10-2008, 11:31 PM
Osimsdds, greenwave Good luck guys! you guys are always helping me out.

"When" I become a dentist, I will fill you guys cavity since you can not take care of your own teeth. Oh absolutely NO CHARGE!:D

Haha, good luck to you too and thanks for the offer. Heck, when I become a dentist Ill do the same for you. No lie, you can hold me to it :). Good luck bud, I hope all of us do extremely well!

atlanta213
07-10-2008, 11:32 PM
Trust me too. I will really do it for you!!!