oh i get it, i had da same trouble wit dat also,now its all cleared up

 

i was talking about the "double bond" (two lines) to the oxygen from the carbon...

 

i think this is better


[IMG]local://upfiles/57068/C8F72589EC284CFE9612F0C7EFF48E53.jpg[/IMG]

 

It's cool. he's talking to his Neon buddies.

 

laptop+browsing forums+need help=ask forum people lol

 

well its time to take my test, wish me luck lol. hopefully if i know as much as i think i do i should be ok......

 

ha thats the good thing about this forum, good luck man

 

lol @ the MS Paint handywork. Hope you did good on your test though.

 

i dont know if this is too late, butttttttt

a molecule can have a double bond when more than one electron needs to be shared to fill an octet. atoms want to have their valance shells filled (H=2, all others 8) so they stive to do that by sharing electrons. they can also have lone pairs which will add up to be the octet. the trick when figuring out if something has a double bond or something is add up all the valance electrons, then draw the molecule starting with only one bond for each atom. then put the lone pairs around the atoms to ill the octet. if there are not enough to make octets for all of them, you need to have a double bond. there are also triple bonds, but they arent that common. and H cannot have a double bond. then you come to the exceptions in which the atoms exceed their valance electron limit. you need to look into the formalcharges on each atom to decide if that will occur. im not sure how in depth your class is so i wont get into that lol

 

well its just the beginning so we aren't that far into it, i think thats more of chemistry, but we need to know the basics for our biology class. Anyway i already took the test but that was EXACTLY the explanation i was looking for, thanks for clearing it up for me. Where were you yesterday lol, no but really thanks it makes me get a better understanding of it.