**Carbanion: A Carbanion is an anion in which carbon has an unshared pair of electrons and holds a negative charge generally with three groups for eight valence electrons
**

- It is a negative charged species
- It has octet of electrons
- Diamagnetic in Nature.

**Structure:
**

- If negative charge is in Resonance then, Hybridization of Carbanion is sp2 (Triangular Planer Shape)
- If negative charge is not in Resonance then the Hybridization of Carbanion is sp3 (pyramidal)

**Stability:
**

**Its stability can be determined with the help of
**

- Inductive effect
- Resonance effect

**Ex.1 **

**Stability of the carbocation is as follows**

**Ex.2 Compare the stability of the following Carbanion**

(a)

(b)

(c)

**Sol. c > a > b (Stability)**

**Ex.3 Compare the stability of the following Carbanion
**

- -CH2CF3
- -CH2Cl3
- -CH2CBr3

**Sol. a > b > c**

** Ex.4 **Arrange the following anion ion order of their stability

- Cl-
- Br-
- F-
- I- (Maximum size)

Maximum dispersion negative charge

Maximum stability

**Sol. **d > b > a > c

** Ex.5 **Compare the Stability of the following

- -CH3
- -NH2
- -OH
- F-

**Sol. **Same period element (C, N, O, F)

⇒Stability ∝ E.N. of the atom

a > c > b > a

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