Arrange the following compounds in the ascending order of their basic strength and give reasons for your answer :
Methylamine, Aniline, Ethylamine, Diethyl ether

Explanation

To arrange the compounds Methylamine, Aniline, Ethylamine, and Diethyl ether in ascending order of their basic strength, we will analyze the basicity of each compound based on the availability of the lone pair of electrons on the nitrogen atom for protonation.

### Step-by-Step Solution:

1. **Understanding Basicity**: Basicity refers to the ability of a compound to accept protons (H⁺ ions). The more available the lone pair of electrons on the nitrogen atom, the stronger the base.

2. **Analyzing Diethyl Ether**:
- Diethyl ether (C₂H₅)₂O is an ether and does not have a nitrogen atom. Therefore, it cannot accept protons and is considered neutral in terms of basicity.
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