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Easy way of remembering the difference

Posted: Thu Nov 01, 2018 8:05 pm
by Bruce Chen 2H
Does anyone know an easy way to tell the difference between the bonds because they are very confusing into what they are?

Re: Easy way of remembering the difference

Posted: Thu Nov 01, 2018 8:29 pm
by Desiree1G
Between bonds, do you mean ionic and covalent? If you do, I usually look at the elements. If it has a metal in it, it is ionic because ionic bonds typically transfer one electron from a metal to a nonmetal. And if it has a positive charge it is a cation. This means it lost an electron hence making it more positive. If it has a negative charge it gained an electron, hence making it more negative. Covalent bonds share electrons and they have single bonds (longest of the three), double bonds, and triple bonds (shortest of the three).

Re: Easy way of remembering the difference

Posted: Thu Nov 01, 2018 10:05 pm
by Albert Duong 4C
If you're asking about sigma and pi bonds, both are covalent bonds, but sigma bonds are stronger than pi bonds due to overlapping atomic orbitals (pi bonds only overlap the lobe of their atomic orbitals while sigma bonds overlap end-to-end). Generally, single bonds are always sigma bonds, but multiple bonds will have both sigma and pi bonds.

Re: Easy way of remembering the difference

Posted: Fri Nov 02, 2018 1:35 am
by Sam Kelly 1K
Albert Duong 1B wrote:Generally, single bonds are always sigma bonds, but multiple bonds will have both sigma and pi bonds.

In what situations would single bonds not be sigma bonds?

Re: Easy way of remembering the difference

Posted: Fri Nov 02, 2018 1:45 pm
by Albert Duong 4C
In special situations, a pi bond can exist between 2 atoms that don't have a net sigma-bonding effect between them, such as in certain metal complexes and some cases of atoms having multiple bonds like diiron hexacarbonyl (Fe2(CO)6). However, these are not very common and I don't believe you would have to know about them. But most of the time, single bonds are sigma bonds, double bonds are sigma and pi bonds, and triple bonds are sigma and 2 pi bonds.

Re: Easy way of remembering the difference

Posted: Thu Nov 08, 2018 7:49 pm
by haleyervin7
Do sigma and pi bonds occur in both ionic and covalent bonds or just covalent?

Re: Easy way of remembering the difference

Posted: Thu Nov 08, 2018 9:21 pm
by Celine Hoh 2L
I believe that they only happen in covalent bonds as ionic bonds are a complete transfer of electrons without any sharing.