What type of isomerism is exhibited by nitropentaamminechromium $(III)$ chloride?

In the nitroprusside ion,the iron exists as $Fe^{2+}$ and $NO$ as $NO^{+}$ rather than $Fe^{3+}$ and $NO$ respectively. These forms of ions are established with the help of

The spin magnetic moment of cobalt in $Hg[Co(SCN)_4]$ is

What are the complex ions $[Co(NH_3)_5(NO_2)]^{2+}$ and $[Co(NH_3)_5(ONO)]^{2+}$ called?

Which of the following complex ions has a magnetic moment same as $[Cr(H_2O)_6]^{3+}$?

Atomic numbers of $Cr$,$Fe$,and $Co$ are $24$,$26$,and $27$ respectively. Which of the following inner orbital octahedral complexes are paramagnetic?