Double bonds

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704992521
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

Double bonds

Postby 704992521 » Sun May 20, 2018 11:02 pm

Do you only put the double bonds on the central atom in larger molecules?

Jimmy lira-1G
Posts: 61
Joined: Fri Apr 06, 2018 11:03 am

Re: Double bonds

Postby Jimmy lira-1G » Sun May 20, 2018 11:28 pm

Your question is kind of confusing, but I'm going to attempt to help you out!

So double bonds are used simply when they are needed to fill the octet rule and shelves of certain combinations of elements. Whether the molecules are large or small, double bonds are used to fulfill the octet rule and make sure the elements that are sharing electrons are complete while also considering certain exceptions.

So, with the central atoms, I'm almost sure that the double, triple bonds have to be with the central atom and another element.

check this out
https://www.khanacademy.org/test-prep/m ... lent-bonds

-Jimmy Lira 1G

Emily 1E
Posts: 27
Joined: Fri Apr 06, 2018 11:03 am

Re: Double bonds

Postby Emily 1E » Sun May 20, 2018 11:35 pm

Correct me if I'm wrong, but I don't think that is an explicit rule, I think it just depends on which atoms are bonding to which, and how many electrons (both bonding and lone pair) you need to draw into the Lewis Structure. For example, oxygen tends to form double bonds in both large and small molecules, and not always on the central atom in either.

Sonia Aronson 1B
Posts: 30
Joined: Fri Apr 06, 2018 11:01 am

Re: Double bonds

Postby Sonia Aronson 1B » Mon May 21, 2018 11:15 pm

I think double bonds usually end up going on the central atom, but it's not a rule because it can change.
I was also wondering how we know when to use a double bond?


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