(C) $[SiF_6]^{2-}$ is known to exist,but due to the large size of the chlorine $(Cl)$ atom and steric hindrance,$[SiCl_6]^{2-}$ ions are not known to

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Both $[SiF_6]^{2-}$ and $[SiCl_6]^{2-}$ ions are known.

(C) $[SiF_6]^{2-}$ is known to exist,but due to the large size of the chlorine $(Cl)$ atom and steric hindrance,$[SiCl_6]^{2-}$ ions are not known to exist. Therefore,the statement in option $C$ is incorrect.

Class 11 Chemistry p-Block Elements (Class 11)Carbon family

Easy

Which one of the following statements is not correct?

AP EAMCET 2017 All AP EAMCET

A
In $CO_2$ molecule,carbon hybridisation is $sp$.
B
Fullerenes are made by heating graphite in an electric arc in the presence of argon gas.
C
Both $[SiF_6]^{2-}$ and $[SiCl_6]^{2-}$ ions are known.
D
In $CO$ molecule,there are one $\sigma$ and two $\pi$ bonds.