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Which of the following species is not stable ? (1) [SiF6]2-  (2) [GeCl6]2- (3) [Sn(OH)6]2-  4)  [SiCl6]2-

By   July 26, 2022

Question : Which of the following species is not stable ?

(1) [SiF6]2-                  (2) [GeCl6]2-

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(3) [Sn(OH)6]2-              (4)  [SiCl6]2-

answer : from all above options the correct answer is “(4)  [SiCl6]2- ” because other three compounds are stable means  [SiF6]2- , [GeCl6]2- and also [Sn(OH)6]2- is stable in nature but ‘[SiCl6]2- ‘ is unstable in nature that is we have marked this option for correct answer.

Answer explanation : Silicon can not form the complex [SiCl6]2- as size of silicon is smaller and due to steric hinderence , silicon can not bear six big Cl ions. Hence the correct answer is option (4) that is [SiCl6]2- species is not stable.