Bond lengths

(Polar molecules, Non-polar molecules, etc.)

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Hadji Yono-Cruz 2L
Posts: 64
Joined: Fri Sep 28, 2018 12:26 am

Bond lengths

Postby Hadji Yono-Cruz 2L » Tue Nov 27, 2018 1:52 pm

How can you tell what atom has a shorter or longer bond length when comparing atoms and ions? For example, rank the molecules from smallest to largest N-O bond length.

NO2-, NO3-, NO+, NO

Anusha 1H
Posts: 65
Joined: Fri Sep 28, 2018 12:15 am

Re: Bond lengths

Postby Anusha 1H » Tue Nov 27, 2018 2:05 pm

Drawing out all the molecules helps.
Single bonds are the longest and weakest, while triple bonds are the shortest and strongest.

So, NO+, for example, has one triple bond, so you know it will have a shorter N-O bond length than NO2- which has one double bond and one single bond.

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