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What is the bond angle of NO2?
What is the molecular geometry of NO2–?
Does NO2 have a bent molecular geometry?
What is the molecular geometry of NO2 - (nitrite ion)?
What is the bond angle of nitrite ion NO2?
Why is NO2 a trigonal planar atom?
Feb 10, 2019 · A quick explanation of the molecular geometry of NO2 - (the Nitrite ion) including a description of the NO2 - bond angles. Looking at the NO2 - Lewis structure we can see that there are...
- 2 min
- 160.9K
- Wayne Breslyn
Dec 11, 2013 · A quick explanation of the molecular geometry of NO2 including a description of the NO2 bond angles. Note the exact bond angle is 134.3 degrees). Looking at the NO2 Lewis structure...
- 2 min
- 111.6K
- Wayne Breslyn
- Lewis Structure
- Molecular Geometry
- Hybridization
- No2 Polarity
- Molecular Orbital (MO) Diagram
- Conclusion
A Brief Intro
Inside an atom, we have the positively charged nucleus surrounded by electrons in their shells forming a negatively charged cloud. The electrons in the outermost shell which determine the valency are known as valence electrons. Lewis Structure is a diagrammatic representation of any given molecule with the help of the constituent atoms and the position and arrangement of electrons to form bonds and lone pairs. This is a limited theory on chemical bonding nature and electronic structure but pr...
Lewis Structure of NO2
A molecule of nitrogen dioxide consists of one nitrogen atom and two atoms of oxygen. Let us look at the periodic table. Nitrogen belongs to group 15( or group 5) and has an atomic number of 7, therefore has a valency of 5. Oxygen belongs to group 16 ( or group 6) and has an atomic number of 8, therefore a valency of 6. Total valence electron number in NO2 = 5 + 6*2 = 17. Now, to find out which atom will act as a central one, we have to look at Pauling’s Electronegativity chart. Nitrogen is t...
Octet Rule
Do you know that the elements present in the main groups of the periodic table have a tendency to form an eight-electron arrangement in their valence shell following noble gas configurations? This is known as the octet rule and is an important concept to sketch the most probable Lewis Structure of a molecule. Look at the diagram again. We have already made the two O atoms achieve the Neon configuration. Now, the Nitrogen atom has only five electrons surrounding it and the total number of vale...
Let us look at some of the drawbacks of Lewis Structure: 1. It can only provide a 2D representation and not a 3D one. 2. Lewis Structure can only talk about the arrangement of electrons but not how the electrons are shared. 3. It can only identify the type of bond formation but cannot elaborate on how the bond formation takes place. This is where t...
Orbital Hybridization
Do you know that an electron can be described with the help of its wave function? We are aware of the concept of atomic orbitals, the mathematical probability functions indicating the presence of electrons in any regional space. When wave functions of atomic orbitals combine or form a fusion, it results in hybrid orbitals and the process is known as orbital hybridization.
Hybridization of NO2
The single bond in N-O has one sigma bond and the double bond N=O has one sigma bond and one pi bond. Pi bond doesn’t take part in hybridization. Now, in NO2 we have 17 valence electrons, therefore this is an odd-electron system. For single electron species, we have the following rule to follow: If the oxidation state of the central atom is found positive then the electron will participate in the hybridization process but if the oxidation state is negative, it will not participate. In nitroge...
What is Polarity?
Polarity is an important concept of chemistry. Every molecular composition has a property of polarity which determines whether the said molecule is polar or non-polar. This depends on the nature of chemical bonding which influences the shape and geometry. A diatomic homogeneous molecule that consists of like atoms always results in zero dipole moment and hence non-polar. However, inside a heterogenous polyatomic molecule, we have several atomic elements with different varying electronegativit...
What makes NO2 a polar molecule?
Nitrogen has an electronegativity value of 3.04 and oxygen has that of 3.44. This means there is an electronegativity difference between the two atomic elements. Although the difference is quite less, we have an asymmetrical bent molecular structure that induces the net dipole moment and makes NO2 a polar molecule in reality. For detailed information, you should also once read out an article on the Polarity of NO2.
Explanation
Electrons can have both particle and wave-like nature. Molecular Orbital theory is a concept of quantum mechanics that attempts to explain the chemical bonding inside any molecule. In this theory, we get to know that valence electrons can be shared amongst all constituent atoms and atomic orbitals from different atoms combine to form molecular orbitals ( MOs ). Here, we will incorporate certain terminologies like anti-bonding, non-bonding, and bonding orbitals. Also, we have the concept of HO...
MO Diagram for NO2
Let us look at the electronic configuration of both N & O. N: 1s2 2s2 2p3 O: 1s2 2s2 2p4 ( we have two O atoms in NO2 ) The six electrons present in the 1s orbital do not take part in bonding, therefore will play the role of non-bonding orbitals. The two electrons of 1s2 in the Nitrogen atom take part in σ2s MO. The oxygen atoms contribute to 2 lone pairs each. The remaining electrons in p orbitals of N and O form the σ2px, 𝜋2py, 𝜋2pz, and σ*2s.
NO2 is one of the most common heteronuclear diatomic molecules. We, in this article, have discussed in detail the nature of the chemical bonding of the molecule. We hope you have gone through the steps of forming a perfect Lewis structure, usage of notations of VSEPR theory to calculate the bond angles and predict the molecular geometry, the proces...
May 25, 2022 · The presence of lone pairs in NO2 affects its geometry and bond angles. In NO2, the nitrogen atom is surrounded by two oxygen atoms and one lone pair. This arrangement gives rise to a bent or V-shaped molecular geometry.
NO2- Lewis Structure, Molecular and Electron Geometry based on the VSEPR theory, the steric number, Hybridization and expected bond angles.
Jun 3, 2023 · What is the molecular geometry of NO 2 –? The molecular shape of NO 2 – is bent, or AX 2 E using Valence Shell Electron Pair Repulsion (VSEPR) theory. Hence, the molecular geometry of NO 2 – only has 134 degree bond angles in the molecule. NO 2 – looks like this:
The actual geometry observed in nitrite ion is the bent shape or V shape, and the bond angle is observed to be 134 degrees instead of 120 degrees. Nitrogen has an extra electron or odd electron in the molecule.
