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Assertion SiF(6)^(2-) anion exists but ...

Assertion `SiF_(6)^(2-)` anion exists but `CF_(6)^(2-)` does not
Reasoning Si atom vacnat d-orbital while C-atom has not .

A

If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`

B

If both `(A)` and `(R )` are correct and `(R )` is the correct explanation of `(A)`

C

If `(A)` is correct but `(R )` is incorrect

D

If `(A)` is incorrect but `(R )` is correct

Text Solution

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The correct Answer is:
A
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Explore conceptually related problems

SiF_(6)^(2-) exist but not CF_(6)^(2-) explain why ?

[SiF_(6)]^(2-) is known where as [SiCl_(6)]^(2-) not. Reason is

In SiF_(6)^(2-) and SiCl_(6)^(2-). which one exist?

Why [BF_(6)]^(2-) ion does not exist?

Assertion: SiF_(6)^(2-) is known but SiCl_(6)^(2-) is not. Reason: Size of fluorine is small and its lone pair of electrons intersects with d-orbitals of Si strongly.

Assertion(A) - PCl_5 exists but BiCl_5 does not. Reason(R ) : Bi does not contain d orbitals to expand its octet.

Knowledge Check

  • [SiF_(6)]^(2-) is known where as [SiCl_(6)]^(2-) not. Reason is

    A
    Six large chloride ions can not be accommo dated around `Si^(4+)` due to limitation of its size.
    B
    Interaction between lone pair of chloride ion and `Si^(4+)` is not very strong.
    C
    Both 1 and 2
    D
    Presence of d-orbitals in chlorine

  • In SiF_(6)^(2-) and SiCl_(6)^(2-). which one exist?

    A
    `SiF_(6)^(2-)` because of small size of F
    B
    `SiF_(6)^(2-)` because of large size of F
    C
    `SiCl_(6)^(2-)` because of small size of Cl
    D
    `SiCl_(6)^(2-)` because of large size of Cl

  • Assertion. SiF_(6)^(2-) is known but SiCl_(6)^(2-) is not. Reason. Size of F is small and its lone pair of electrons intract with d-orbitals of Si strongly.

    A
    If both assertion and reason are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason not is the true explanation of the assertion.
    C
    If assertion is true, but reason is false.
    D
    If both assertion and reason are false.
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