Question

Name the following complex ions.

$$\begin{gathered} a)Ru{\left(N{H}_3\right)}_{5}C{l}^{2+} \\ b)Fe{{\left(CN\right)}_6}^{4-} \\ c)Mn{{\left(N{H}_{2}C{H}_{2}C{H}_{2}N{H}_2\right)}_3}^{2+} \\ d)Co{\left(N{H}_3\right)}_{5}N{O_2}^{2+} \end{gathered}$$

Short answer

$$\begin{gathered} a.Ru{\left(N{H}_3\right)}_{5}C{l}^{2+}-Pentaamminechlororuthenium\left(III\right) \\ b.Fe{{\left(CN\right)}_6}^{4-}-Hexacyanoferrate\left(II\right) \\ c.Mn{{\left(N{H}_{2}C{H}_{2}C{H}_{2}N{H}_2\right)}_3}^{2+}-Tris\left(ethylenediamine\right)Mangnese\left(II\right) \\ d.Co{\left(N{H}_3\right)}_{5}N{O_2}^{2+}-Pentaamminenitritocobalt\left(III\right) \end{gathered}$$

Step-by-step solution

Step 1: Coordination sphere

If the coordination sphere is cation or bears a positive charge then name of the central metal atom remains as is it. In following compounds metal atom is in coordination sphere which is cation.

$$\begin{gathered} a.Ru{\left(N{H}_3\right)}_{5}C{l}^{2+}-Pentaamminechlororuthenium\left(III\right) \\ b.Mn{{\left(N{H}_{2}C{H}_{2}C{H}_{2}N{H}_2\right)}_3}^{2+}-Tris\left(ethylenediamine\right)Mangnese\left(II\right) \\ c.Co{\left(N{H}_3\right)}_{5}N{O_2}^{2+}-Pentaamminenitritocobalt\left(III\right) \end{gathered}$$

Example

If the coordination sphere is an anion or bears a negative charge, then the name of the central metal atom ends in “ate”. The following is an example.

$Fe{{\left(CN\right)}_6}^{4-}-Hexacyanoferrate\left(II\right)$