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NEET 2019
Exam
NEET
Year
2019
Subject
Chemistry
Chapter
Coordination Compounds

NEET 2019 · Chemistry · Coordination Compounds

Which of the following species is not stable?

Which of the following species is not stable?

Options

  1. A[SiF6]2−{\left[Si{F}_{6}\right]}^{2 -}
  2. B[GeCl6]2−{\left[GeC{l}_{6}\right]}^{2 -}
  3. C[Sn(OH)6]2−{\left[Sn{\left(OH\right)}_{6}\right]}^{2 -}
  4. D[SiCl6]2−{\left[SiC{l}_{6}\right]}^{2 -}

Correct answer

D. [SiCl6]2−{\left[SiC{l}_{6}\right]}^{2 -}

Step-by-step solution

[SiCl6]−2{[ SiC{l}_{6} ]}^{- 2} is unstable due to steric hinderance.

Steric hindrance is when the large size of groups within a molecule prevents chemical reactions which can take place in related molecules with smaller groups. Steric hindrance is also a reason for protection of some groups from unwanted chemical modifications.

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