Bond strength

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Jina Kwon
Posts: 100
Joined: Fri Aug 09, 2019 12:15 am

Bond strength

Postby Jina Kwon » Thu Oct 24, 2019 5:01 pm

Are covalent bonds stronger or ionic bonds and why? Does this also relate to electronegativity?

kevinchang_4I
Posts: 55
Joined: Tue Nov 13, 2018 12:17 am

Re: Bond strength

Postby kevinchang_4I » Thu Oct 24, 2019 5:10 pm

Ionic bonds are stronger than covalent bonds. Ionic bonds are stronger because they are formed through the attraction of opposite charges of a metallic (+) and nonmetallic ion (-). Covalent bonds are two nonmetallic atoms sharing atoms, and aren't as strong.

Vicki Liu 2L
Posts: 101
Joined: Sat Aug 24, 2019 12:15 am

Re: Bond strength

Postby Vicki Liu 2L » Thu Oct 24, 2019 5:55 pm

To answer your second question, ionic and covalent bonds relate to electronegativity in that if the electronegativity difference is greater than 2.0, the bond is ionic. If it is less than 2.0, the bond is covalent. What this indicates in terms of strength is that in ionic bonds, the elements are much more attracted to each other than in covalent bonds.

LNgo 1G
Posts: 100
Joined: Sat Aug 24, 2019 12:16 am

Re: Bond strength

Postby LNgo 1G » Thu Oct 24, 2019 8:24 pm

Ionic bonds are stronger because they involve the giving and accepting of electrons between atoms while in covalent bonds, the electrons are only shared.

ishaa Diwakar 4E
Posts: 56
Joined: Wed Sep 11, 2019 12:17 am

Re: Bond strength

Postby ishaa Diwakar 4E » Thu Oct 24, 2019 8:29 pm

To add on to this, covalent bonds are stronger than ionic bonds in biological systems, since molecules will often be dissolved in water. Otherwise, ionic bonds are usually stronger.

Justin Quan 4I
Posts: 104
Joined: Sat Sep 14, 2019 12:17 am

Re: Bond strength

Postby Justin Quan 4I » Fri Oct 25, 2019 11:20 am

To add on, if you compare ionic bonds and covalent bonds in space, ionic bonds are stronger. However, if you compare the two bonds in water, covalent bonds are stronger because water dissociates ionic bonds. For example, if you put NaCl in water, it dissolves , the Na+ ion and the Cl- ion will separate.

405335722
Posts: 56
Joined: Fri Aug 30, 2019 12:16 am

Re: Bond strength

Postby 405335722 » Fri Oct 25, 2019 11:25 am

ionic bonds are stronger than covalent bonds

but, covalent network bonds are the strongest of all bonds and include compounds like diamond and graphite

Miriam Villarreal 1J
Posts: 105
Joined: Sat Aug 17, 2019 12:16 am

Re: Bond strength

Postby Miriam Villarreal 1J » Fri Oct 25, 2019 12:02 pm

Since covalent bonds involve the sharing of electrons in order to complete an octet, the atoms never have as high of an electronegativity as ionic bonds which involve the complete transfer of electrons.


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