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Bond strength

Posted: Thu Oct 24, 2019 5:01 pm
by Jina Kwon
Are covalent bonds stronger or ionic bonds and why? Does this also relate to electronegativity?

Re: Bond strength

Posted: Thu Oct 24, 2019 5:10 pm
by kevinchang_4I
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.

Re: Bond strength

Posted: Thu Oct 24, 2019 5:55 pm
by Vicki Liu 2L
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.

Re: Bond strength

Posted: Thu Oct 24, 2019 8:24 pm
by LNgo 1G
Ionic bonds are stronger because they involve the giving and accepting of electrons between atoms while in covalent bonds, the electrons are only shared.

Re: Bond strength

Posted: Thu Oct 24, 2019 8:29 pm
by ishaa Diwakar 4E
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.

Re: Bond strength

Posted: Fri Oct 25, 2019 11:20 am
by Justin Quan 4I
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.

Re: Bond strength

Posted: Fri Oct 25, 2019 11:25 am
by 405335722
ionic bonds are stronger than covalent bonds

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

Re: Bond strength

Posted: Fri Oct 25, 2019 12:02 pm
by Miriam Villarreal 1J
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.