Multiple choice

Which of the following statements is/are incorrect? A. The complex ion trans-dichloro bis (ethylenediamine) rhodium (III) is optical active. B. Secondary valancies are non-directional whereas primary valencies are directional. C. Both geometrical and optical isomerisms are shown by [Co(en)2Cl2]+.

  1. Only A

  2. Only B

  3. Both 1 and 2

  4. Only C

  5. Both 2 and 3
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This option is correct because trans-dichloro bis (ethylenediamine) rhodium(III) is symmetrical and therefore, is optically inactive and according to Werner’s theory, secondary valancy is directional whereas primary valency is non-directional.

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