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Statement-1. (SiH(3))(H)N is a weaker ...

Statement-1. `(SiH_(3))_(H)N` is a weaker base than `(CH_(3))_(3)N`.
Statement-2. Due to `ppi-dpi` back bonding the availability of electrons on the N atom in `(SiH_(3))+(3)N` decreases.

A

Statement-1 is True, Statement-2 is True , Statement-2 is a correct explanation for statement-1.

B

Statement-1 is True, Statement-2 is True , Statement-2 is not a correct explanation for statement-1.

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

Text Solution

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The correct Answer is:
A
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Why (SiH_(3))_(3) is a weaker base than (CH_(3))_(3)N ?

(SiH_(3)) is a weaker base than (CH_(3))_(3) N. Explain.

Knowledge Check

  • Assertion (A) : N (SiH_3)_3 is a weaker based than N (CH_3)_3 Reason (R) : Due to p pi - d pi back bonding imn N (SiH_3)_3 the availvbaility of electrons on the (B) atom in (SiH_3) N decrease .

    A
    If both (A) and (R) are correct and (R) is correct explanation of (A)
    B
    If both (A) and (R) are correct and (R) is NOT correct explanation of (A)
    C
    If (A) is correct , but (R) is incorrect
    D
    If (A) is incorrect but (R) is correct

  • Statement-1. BF_(3) is a weaker Lewis acid than BCl_(3) . Statement-2. The ppi-ppi back bonding is stronger in BF_(3) than in BCl_(3) .

    A
    Statement-1 is True, Statement-2 is True , Statement-2 is a correct explanation for statement-1.
    B
    Statement-1 is True, Statement-2 is True , Statement-2 is not a correct explanation for statement-1.
    C
    Statement-1 is True, Statement-2 is False.
    D
    Statement-1 is False, Statement-2 is True.

  • Trisilyamine (SiH_(3))_(3) N is

    A
    trigonal pyramidal and acidic
    B
    trigonal pyramidal and basic
    C
    trigonal pyramidal and neutral
    D
    trigonal planar and weakly basic

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    Why N(CH_(3))_(3) is pyramidal but N(SiH_(3))_(3) is planar ?

    Statement-1: NF_(3) is a weaker ligand than N(CH_(3))_(3) . Statement-2: NF_(3) ionises to give F^(-) ions in aqueous solution.

    Statement-1: NF_(3) is a weaker ligand than N(CH_(3))_(3) . Statement-2: NF_(3) ionises to give F^(-) ions in aqueous solution.

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