The major product formed when alkyl iodides is treated with ammonia

Options

A. primary amine
B. secondary amine
C. tertiary amine
D. quatermary ammonium salt

Explanation

To determine the major product formed when alkyl iodides are treated with ammonia, we can follow these steps:

### Step 1: Identify the Reactants
The reactants in this reaction are alkyl iodides and ammonia. The general formula for alkyl iodides is R-I, where R is an alkyl group, and I is iodine.

### Step 2: Understand the Reaction Mechanism
When ammonia (NH₃) reacts with the alkyl iodide (R-I), the nitrogen atom in ammonia has a lone pair of electrons. This lone pair can be used to attack the carbon atom in the alkyl iodide.

### Step 3: Nucleophilic Attack
The nitrogen atom in ammonia acts as a nucleophile and attacks the carbon atom bonded to iodine in the alkyl iodide. This results in the formation of a new bond between the nitrogen and carbon, while the iodine atom is displaced.

### Step 4: Formation of the Intermediate
As the nitrogen attacks the carbon, the iodine atom leaves as iodide ion (I⁻). This forms an intermediate compound, which can be represented as R-NH₃⁺. This intermediate has a positive charge on the nitrogen atom.

### Step 5: Deprotonation
The positively charged nitrogen is unstable, and to stabilize itself, it will lose a proton (H⁺). This results in the formation of a primary amine, R-NH₂.

### Step 6: Identify the Product
The final product of this reaction is a primary amine, which can be represented as R-NH₂. This is because the nitrogen is bonded to one alkyl group (R) and two hydrogen atoms.

### Conclusion
The major product formed when alkyl iodides are treated with ammonia is a primary amine (R-NH₂).