question_answer

In the complex ion \[{{\left\{ Co{{(N{{H}_{3}})}_{6}} \right\}}^{3+}}\] the \[N{{H}_{3}}\] molecules are linked to the central metal ion by

A)  ionic bonds      

B)  covalent bonds

C)  co-ordinate bonds

D)  hydrogen bonds

Correct Answer: C

Solution :

In the complex ion \[{{\left\{ Co{{\left( N{{H}_{3}} \right)}_{6}} \right\}}^{3+}}\]the \[N{{H}_{3}}\] molecules are linked to the central metal ion by co-ordinate bonds. Its structure is as: