Assertion: SiF62- is known but SiCl62- is not. Reason: Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly.

Question

Assertion: SiF62- is known but SiCl62- is not. Reason: Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Both assertion and reason are true and reason is the correct explanation of assertion. SiF 62- is known, as F has small size and thus, the ion is quite stable unlike SiCl 62- in which size of Cl atom is large which destabilise it.

Q. Assertion : $S i F_{6}^{2 -}$ is known but $S i C l_{6}^{2 -}$ is not.
Reason : Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of $S i$ strongly.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Both assertion and reason are true and reason is the correct explanation of assertion. $S i F_{6}^{2 -}$ is known, as $F$ has small size and thus, the ion is quite stable unlike $S i C l_{6}^{2 -}$ in which size of $Cl$ atom is large which destabilise it.

Q. Assertion : SiF62−​ is known but SiCl62−​ is not. Reason : Size of fluorine is small and its lone pair of electrons interacts with d-orbitals of Si strongly.