Arrange the following compounds according to reactivity towards nucleophillic substitution reaction with reagents mentioned :-
4-nitrochlorobenzene> 2,4 dinitrochlorobemzene > 2,4,6, trinitrochlorobenzene with `CH_(3)Ona`

Explanation

To arrange the given compounds according to their reactivity towards nucleophilic substitution reactions with the nucleophile `CH3O-Na`, we need to analyze the influence of the nitro groups on the reactivity of each compound. Here’s a step-by-step solution:

### Step 1: Understand the Nucleophile
The nucleophile in this reaction is `CH3O-`, which is the methoxide ion. This ion is a strong nucleophile and will attack the electrophilic carbon in the aromatic ring where the chlorine atom is attached.

### Step 2: Identify the Compounds
The compounds we need to analyze are:
1. 4-Nitrochlorobenzene
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