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NEET2019ChemistryCoordination CompoundsActual

Which of the following species is not stable?

Options

  1. AS i F 6 2 -
  2. BG e C l 6 2 -
  3. CS n O H 6 2 -
  4. DS i C l 6 2 -

Correct answer

D. S i C l 6 2 -

Step-by-step solution

[ S i C 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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