The correct order of basicity of the following amines

I > I I > I I I > I V

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I > I I I > I I > I V

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I I I > I I > I > I V

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I V > I I I > I I > I

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Solution

The correct option is B $I > I I I > I I > I V$
I- Lone pair of 'N' doesn't involved in resonance
II- Lone pair of 'N' is involved in resonance
III- Lone pair of 'N' is involved in resonance and also basicity is increased due to +I effect of $C H_{3}$ group
IV- Lone pair of 'N' is involved in resonance and also basicity decreases due to -I effect of $N O_{2}$ group

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Similar questions

Arrange the following in the increasing order of their basicity.

CH₃NH₂(I) ;(CH₃)₂NH(II) ;C₆H₅NH₂(III) ;(CH₃)₃N(IV)

I . T l_{2} O

I I . A l_{2} O_{3}

I I I . T l_{2} O_{3}

I V . G a_{2} O_{3}

In the following molecules:
$C H_{3} B r, C H_{3} F, C H_{3} C l, C H_{3} I I, I I, I I I, I V$
The correct order of dipole moment will be:

P h O^{⊖}

C H_{3} S^{⊖}

⊖ O H

M e O^{⊖}

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