hat
Se konsa Azòt tou ap swiv regleman octet a, lè ou ka desine imaj estrikti Point. an n fè yon sèl ankò. oksijèn, kap vini an. Si mwen vle fè yon Point estrikti, pou méthanol, méthanol se CH3OH. Se konsa yon fwa ankò, mwen kòmanse ap pran carbon, ak kat valence électrons e mwen gen twa hydrogens, yonn chak ak yon sèl valence microscope kon sa
eng
let's do one more. oxygen, next. so if i want to draw a dot structure, for methanol, methanol is CH3OH. so once again, i'll start carbon, with four valence electrons, and i have three hydrogens, each one with one valence electron like that so i can go ahead and put those three hydrogens next i have oxygen so i need to find the oxygen in my organic periodic table and i can see that oxygen is in group 6 right here so oxygen has six valence electrons around it so i can go ahead and draw in oxygen and i can put its six valence electrons in one, two, three, four, five and six like that and then i'm going to put in the hydrogen right? so i know now i have a hydrogen to worry about and i know hydrogen has one valence electron, so i can see there is a place for over here and once again i can connect the dots and see all of the single covalent bonds in this molecule. so that's one bond, that's another bond, now i can see that carbon is bonded to oxygen, and oxygen is bonded to this hydrogen as well again we can check our octet rule so, the carbon has eight electrons around it so is the oxygen this will be two right here and then four, and then six, and then eight so the oxygen is following the octet rule now when you are drawing a dot structure, you don't always have to do this stuff where you are drawing each individual atom, and summing all the valence electron in that way you can just start drawing it so for example, if i gave you C2H6, which is ethyne another way to do it is we just do we'd just be started drawing the bonds here so i have two carbons, and there is a pretty good bet that the two carbons are connected to each other and i have six hydrogens and if i look at what's possible around those carbons, i could put those six hydrogens around those two carbon atoms like that and if i do that, i will have octet around each carbon atom so this would be my dot structure for ethyne. to double-check yourself, you could make sure that your dot structure has the correct number of valence electrons so if i'm thinking about each carbon, each carbon having four valence electrons, and i have two of them, i'm going to get eight valence electrons from those two carbons that i have to represent in my dot structure each hydrogen has one valence electron and i have six of them so i need to worry about six valence electron of hydrogens so the total of 14 so i'm look at my dot strcuture i can check to make sure i have the correct number of valence electrons i need 14, so let's go ahead and count them so this will be two here, four, six, eight, ten, twelve and fourteen so i have the correct number of valence electrons represented in my dot structure i also have an octet of electrons around my carbons so this would be the dot structure for ethane