(a) Write the formula for the following coordination compound Bis(ethane-1,2-diamine) dihydroxidochromium(III) chloride
 (b) Does ionization isomer for the following compound exist? Justify your answer. Hg[Co(SCN) 4]
 (c) Is the central metal atom in coordination complexes a Lewis acid or a Lewis base? Explain.
                    
            
            Solution