Which of the following species is not stable? from Chemistry Coo

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 Multiple Choice QuestionsMultiple Choice Questions

291.

In Cu-ammonia complex, the state of hybridisation of Cu2+ is

  • sp3

  • d3s

  • sp2f

  • dsp2


292.

What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory

  • t2g6eg0

  • e3t23

  • e4t22

  • t2g4 eg2


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293.

Which of the following species is not stable?

  • [GeCl6]2-

  • [Sn(OH)6]2-

  • [SiCl6]2-

  • [SiF6]2-


C.

[SiCl6]2-

(i) Due to presence of d-orbital in Si, Ge and Sn they form species like SiF62-, [GeCl6]2-, [Sn(OH)6]2-.

(ii) SiCl62- does not exist because six large chloride ions cannot be accommodated around Si4+ due to limitation of its size.


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