Which of the following species are not known?

[S i C l_{6}]^{2 -}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

[C F_{6}]^{2 -}

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

[P b C l_{6}]^{2 -}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

[S i F_{6}]^{2 -}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct options are
A $[S i C l_{6}]^{2 -}$
C $[C F_{6}]^{2 -}$
In ${(S i {C l}_{6})}^{2 -}$ , the chlorine is much larger than fluorine which does not allow the six chlorines to surround the silicon due to repulsion between chlorine atoms.
Silicon cannot accomodate $6$ chlorines around it.
Carbon doesn't form ${({C F}_{6})}^{2 -}$ because it does not have any vacant d-orbitals of lower energy and hence it is unable to accept lone pair of electrons in order to form ${({C F}_{6})}^{2 -}$

Suggest Corrections

Similar questions

[S i F_{6}]^{2 -}

[S i C l_{6}]^{2 -}

{[S i F_{6}]}^{2 -}

{[S i {C l}_{6}]}^{2 -}

d

S i

{[S i F_{6}]}^{2 -}

{[S i {C l}_{6}]}^{2 -}

{[{B F}_{6}]}^{3 -}

H {N O}_{3}

[S i F_{6}]^{2 -}

[S i C I_{6}]^{2 -}

N F_{3}

B F_{3}

P F_{5}

[S i F_{6}]^{2 -}

Join BYJU'S Learning Program