Tutorial:Basic Chemistry Topics: Difference between revisions
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The strongest of these bonds is the covalent bond. Covalent bonds involve sharing pairs of electrons between two atoms. These bonds are very stable. Figure two, shown to the left represents Coenzyme A (CoA) with the addition of an acyl group to the sulfur atom. The introduction mentioned that the addition of the acetyl group is important to the study because when it is transferred to Tobramycin, the antibiotic becomes inactive. The solid connections between the atoms are representation of the covalent bonds. | The strongest of these bonds is the covalent bond. Covalent bonds involve sharing pairs of electrons between two atoms. These bonds are very stable. Figure two, shown to the left represents Coenzyme A (CoA) with the addition of an acyl group to the sulfur atom. The introduction mentioned that the addition of the acetyl group is important to the study because when it is transferred to Tobramycin, the antibiotic becomes inactive. The solid connections between the atoms are representation of the covalent bonds. | ||
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==Ionic Bonds== | ==Ionic Bonds== | ||
[[Image:Ionic bond.png| thumb | | [[Image:Ionic bond.png| thumb | center | 400px | Ionic Bonding<ref>. "File:NaF.gif." Wikipedia. Wikipedia, 17 June 2011. Web. 31 Oct. 2012.<http://en.wikipedia.org/wiki/File:NaF.gif.</ref>]] | ||
An ionic bond is when an electron(s) is transferred from one atom to another due to the opposite charges of the atoms. The positively charged cation is attracted to the negatively charged anion. In the image to the right, you see an anion, Fluorine (F) and the cation, Sodium (Na). The double-sided arrow between them is representation of their attractive force. Fluorine has a higher electronegativity than sodium. As we discussed previously, when an atom has higher electronegativity it pulls electrons from the lower electronegative atom, in this case sodium. The transfer of the sodium electron (blue) is shown using an arrow. | An ionic bond is when an electron(s) is transferred from one atom to another due to the opposite charges of the atoms. The positively charged cation is attracted to the negatively charged anion. In the image to the right, you see an anion, Fluorine (F) and the cation, Sodium (Na). The double-sided arrow between them is representation of their attractive force. Fluorine has a higher electronegativity than sodium. As we discussed previously, when an atom has higher electronegativity it pulls electrons from the lower electronegative atom, in this case sodium. The transfer of the sodium electron (blue) is shown using an arrow. | ||
