The following complexes are given :
(1) trans[Co(NH3)4Cl2]+ (2) cis[Co(NH3)2(en)2]3+
(3) trans[Co(NH3)2(en)2]3+ (4) NiCl42−
(5) TiF62− (6) CoF63−
Choose the correct code :
a. (1), (2) are optically active, (3) is optically inactive
(2) is optically active; (1), (3) are optically inactive
c. (4), (5) are coloured and (6) is colourless
(4) is coloured and (5), (6) are colourless