Using IUPAC norms write the formulae for the following :
(a) Potassium trioxalatoaluminate(III)
(b) Dichloridobis(ethane-1,2-diamine)cobalt(III)
(a) Potassium trioxalato aluminate (III)
(b) Diechloridobis (ethane-1,2-diamine) cobalt (III)