Question

How many minimum coordinated Cl${}^{\Theta }$ ions are present in CoCl${}_2$.Br.4NH${}_3$ complex ?

• A. 1
• B. 0
• C. 2
• D. 3

Answer 1

The correct option is A 1

A minimum of one coordinated Cl${}^{\Theta }$ ion is present in CoCl${}_2$.Br.4NH${}_3$ complex. The complex can also be written as $\left[Co\right(N{H}_3{)}_{4}BrCl]Cl$.

Thus, the coordination sphere contains 4 ammonia molecules, one bromide ion and one chloride ion. The ionization sphere contains one chloride ion.

There can be two coordinated chloride ions present in the complex which can be written as $\left[Co\right(N{H}_3{)}_{4}C{l}_2]Br$.