Write the Levi’s dot structure of CO2 and H2O
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Answer: Lewis dot structure of H2O and CO2
1.This is the Lewis Dot Structure for H2O. You could alternatively also draw the structure by including two dots for every bond. While oxygen's octet seems to have been filled, hydrogen only has two electrons for its valence shell. Based on our previous discussion surrounding the covalent bonds which hydrogen forms, we know that hydrogen's valence shell only requires two electrons because it only has a 1s orbital. Therefore its valence electron is filled by oxygen sharing another electron.
H2O's Lewis Dot Structure gives it many unique properties mostly due to the two lone pairs on the central oxygen atom. This increases electron-electron repulsion and therefore creates a bent structure as opposed to CO2's linear structure. This "bent" molecular structure gives it many unique properties such as being polar. One of the most fascinating phenomena is the idea of "hydrogen bonding" which influences water's properties dramatically.
2. This is the Lewis Dot Structure for CO2. You could alternatively also draw the structure by including two dots for every bond. That would mean that you would have a total of eight dots around the carbon, thereby filling its octet. The octets of both of the oxygen atoms are also satisfied, since the oxygens have a total of eight electrons around them (thereby filling the valence shell).
The lewis dot structure of CO2 gives it some unique properties. Since there are no lone pairs on the atom, it is a linear structure which makes the charges cancel it. Therefore it is nonpolar and relatively unreactive. These properties in addition to its small state makes it so that carbon dioxide has a low melting point and is mostly in the gaseous phase at STP (Standard Temperature and Pressure). Even though Carbon Dioxide is quite small, its density is still 1.67 times that of air.
Explanation: Lewis Structure Definition
A Lewis structure is a structural representation of a molecule where dots are used to show electron position around the atoms and lines or dot pairs represent covalent bonds between atoms. The purpose of drawing a Lewis dot structure is to identify the lone electron pairs in molecules to help determine chemical bond formation. Lewis structures may be made for molecules that contain covalent bonds and for coordination compounds. The reason is that electrons are shared in a covalent bond. In an ionic bond, it's more like one atom donates an electron to the other atom.
A Lewis structure is named for Gilbert N. Lewis, who introduced the idea in the article The Atom and the Molecule in 1916.
Also Known As: Lewis structures are also called Lewis dot diagrams, electron dot diagrams, Lewis dot formulas, or electron dot formulas. Technically, Lewis structures and electron dot structures are different because electron dot structures show all electrons as dots, while Lewis structures indicate shared pairs in a chemical bond by drawing a line.