All resonance structures are equally stable. Example: In reality, the molecular structure will be the average (hybrid) of each resonance form: PAGE BREAK.
Table of Contents
What does equivalent resonance structures mean?
All resonance structures are equally stable. Example: In reality, the molecular structure will be the average (hybrid) of each resonance form: PAGE BREAK.
What is stable resonance?
Resonance Stability Rules: The structure with no charge is more stable than any structure with charges. The structure with the least number of formal charges is more stable than those with more. The most stable structure will have the negative charge placed on the most electronegative atom.
What is Lewis structure resonance?
Resonance is a way of describing delocalized electrons within certain molecules or polyatomic ions where the bonding cannot be expressed by a single Lewis formula. A molecule or ion with such delocalized electrons is represented by several resonance structures.
What happens when equivalent resonance structures are possible?
This means that equivalent resonance structures are also equivalent in stability and nonequivalent structures have different stabilities. This in turn means that equivalent structures contribute equally to the hybrid and nonequivalent structures do not contribute equally to the hybrid.
How many equivalent resonance structures are there?
The greater the number of resonance contributors, the greater the resonance stabilization effect, and the more stable the species is. The actual structure of the carbonate anion is a combination of all the three equivalent resonance structures, that can be called a hybrid.
What is the most stable resonance structure?
In fact, the most stable resonance form is the resonance hybrid since it delocalizes the electron density over a greater number of atoms: However, drawing the resonance hybrid is not very practical and often, certain properties and reactions of the molecule are better explained by a single resonance form.
What is cyclic resonance?
In chemistry, aromaticity is a property of cyclic (ring-shaped), typically planar (flat) molecular structures with pi bonds in resonance (those containing delocalized electrons) that gives increased stability compared with other geometric or connective arrangements with the same set of atoms.
What is the best definition for resonance?
Definition of resonance 1a : the quality or state of being resonant. b(1) : a vibration of large amplitude in a mechanical or electrical system caused by a relatively small periodic stimulus of the same or nearly the same period as the natural vibration period of the system.
Why is PF3Cl2 polar?
Is PCl3F2 polar or non polar? According to Bent’s rule position(hybrid orbital) which has lesser “s” character attracts more electronegative atom. In PF3Cl2, two F atoms are diverted to axial position while one F at equatorial position in TBP and hence unsymmetrical molecule so is the of polar nature of PF3Cl2.
What is the hybridization of the central atom in PF3Cl2?
Answer. the hybridization of pf3cl2 is sp3d . Its structure is trigonal bipyramidal. The fluorine atom is more electronegative and occupies an axial position.