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Hybridization of nitrogen atom in pyridi...

Hybridization of nitrogen atom in pyridine is:

A

`sp^(3)` and `sp^(2)`

B

`sp^(2)`

C

sp

D

`sp^(3)d`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • The lone pair of amines makes them basic. They react with acids to form acid-base salts. Amines are more basic than alcohols, ethers and water. When an amine is dissolved in water, an equilibrium is established , where water acts as an acid and transfer a proton to the amine. The basic strength of an amine can be measured by basicity constant K_(b) . Arylamines are less basic than alkylamines because the lone pair of nitrogen is delocalised with the aromatic ring and are less available for donation. Substituted arylamines can be either more basic or less basic than aniline , depending on the substituted . ERG substituents, such as -CH_(3), -NH_(2) and -OCH_(3) increases the basicity and EWG substituents , such as -Cl, -NO_(2) and -CN decreases basicity. While sp^(2)- hybridized nitrogen atom in pyridine is less basic then the sp^(3) -hybridized nitrogen in an alkylamine. Select the correct order of K_(b)

    A
    `CH_(3)NH_(2) gt NaOH`
    B
    Pyridine `gt CH_(3)-NH-CH_(3)`
    C
    p-Methyl aniline `gt ` p-Chloroaniline `gt` p-Amino acetophenone
    D
    p-Bromoaniline `gt` p-Nitroaniline `gt` p-Amino benzaldehyde

  • The lone pair of amines makes them basic. They react with acids to form acid-base salts. Amines are more basic than alcohols, ethers and water. When an amine is dissolved in water, an equilibrium is established , where water acts as an acid and transfer a proton to the amine. The basic strength of an amine can be measured by basicity constant K_(b) . Arylamines are less basic than alkylamines because the lone pair of nitrogen is delocalised with the aromatic ring and are less available for donation. Substituted arylamines can be either more basic or less basic than aniline , depending on the substituted . ERG substituents, such as -CH_(3), -NH_(2) and -OCH_(3) increases the basicity and EWG substituents , such as -Cl, -NO_(2) and -CN decreases basicity. While sp^(2)- hybridized nitrogen atom in pyridine is less basic then the sp^(3) -hybridized nitrogen in an alkylamine. The most basic carbanion is :

    A
    B
    `CH-=overset(Theta)(C)`
    C
    D

  • The hybridization states of the nitrogen atom in pyridine piperidine and pyrrole are respectively

    A
    `sp^(2),sp^(3)andsp^(2)`
    B
    `sp^(2),sp^(2)andsp^(2)`
    C
    `sp^(3),sp^(3)andsp^(3)`
    D
    `sp^(2),sp^(3)andsp^(3)`

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    The hybridization of carbon atom in benzene is :

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