We mentioned in the previous post that covalent bonds are formed as a result of sharing two valence electrons in overlapping orbitals of two atoms. For example, the following Lewis structures represent covalent bonds together with some lone pairs of … Read more
In the previous post, when discussing the formal charges, we mentioned it is possible to “shift” the negative charge on one of the oxygen atoms to another and obtain a new resonance structure: What we want to remember … Read more
In the previous post, we talked about the covalent bond and mentioned that sometimes, depending on the number of bonds, the given atom might have either a positive or a negative charge. For example, the oxygen in water has no … Read more
We mentioned in the previous post that covalent bonds are formed by sharing a pair of valence electrons between two atoms. The covalent bond can be represented with Lewis structures where the covalent bond is shown either by two dots … Read more
In the previous post, when discussing covalent bonds, we mentioned that the bonding electrons are shared between the atoms. From this statement, and the Lewis structures, which are simplified but a very useful tool in representing molecules, one may understand … Read more
In the previous post, we saw that the ionic bond is an electrostatic interaction between ions that are formed when one electron(s) is transferred from one atom to the other. The reason for this electron transfer is the … Read more
The ionic bond is normally formed between metals and nonmetals and the reason for this is their different electron affinity. Remember, metals have low ionization energies and therefore, tend to form cations, while nonmetals have high electron affinity and tend … Read more
Lewis dot symbols consist of the symbol of an element surrounded by its valence electrons represented as dots. So, to draw the Lewis dot symbol of an element, we must first know how many valence electrons it has. Remember, this … Read more
We know that the formation of covalent bonds is achieved by an overlap of orbitals between two atoms that share a pair of valence electrons. The bonds are most often shown with either two dots or a line, and these … Read more
In these practice problems, we will work on determining the Lewis structures of molecules and ions. In short, remember these steps for determining the Lewis structure: 1. Write the correct skeletal structure for the molecule. * Hydrogen … Read more
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