The actual bond angle in NO₂ is 134.3°, and in NO₂⁻ it is115.4°, although the ideal bond angle is 120° for both because
Nitrogen dioxide or NO 2 is an odd electron molecule, meaning it has no even valence electrons. More specifically, a molecule of nitrogen dioxide has a total of 17 valence electrons. Five of them are from nitrogen atoms and six are from two oxygen atoms. molecules with odd electrons are now compatible with the VSEPR theory. In this case, the nitrogen dioxide molecule is assumed to have a geometry of AX2E0.5, intermediate between AX2E0-linear and AX2E1-curved.
What is VSPER Theory?
Valence Shell Electron Pair Repulsion Theory (VSEPR theory) states that all atoms have repulsive forces between their valence pairs, and atoms always try to organize themselves in ways that minimize this repulsive force. It's based on the idea that you're trying. According to the VSEPR hypothesis, the Pauli exclusion principle, which is more important than electrostatic repulsion in determining molecular geometry, is responsible for the repulsion between two electrons.
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