Which of the following complex exhibits the highest paramagnetic behaviour ? where gly = glycine, en = ethylene diamine and bpy = bipyridyl moities (At Nos. Ti = 22, V = 23, Fe = 26, Co = 27)

Which of the following complex exhibits the highest paramagnetic behav

1.	Which of the following complex exhibits the highest paramagnetic behaviour ? where gly = glycine, en = ethylene diamine and bpy = bipyridyl moities (At Nos. Ti = 22, V = 23, Fe = 26, Co = 27)
Answer» `[V(gly)_(2)(OH)_(2)(NH_(3))_(2)]^(+)` `[Fe(en)(bpy)(NH_(3))_(2)]^(2+)` `[Co(OX)_(2)(OH)_(2)]^(2-)` `[Ti(NH_(3))_(6)]^(3+)` Solution :Ox. State of Vin (a) : x+2(-1)+2(-1)+0=+1 or x=+5 `THEREFORE` Valence SHELL config. = `3d^(0)` (i.e., no unpaired ELECTRON) Ox state of Fe in (b) : x+0+0+0=+2 or x = + 2 `therefore` Valence shell config. = `3d^(6)` (i.e., 4 unpaired electrons) Ox. state of Co in (c ) : x+2(-2)+2(-1)=-2 or x=+4 `therefore` Valence shell config. `=3d^(5)` (i.e., 5 unpaired electrons) Ox state of Tiin (d) : x+6(0)=+3 or x=+3 `therefore` Valence shell config. = `3d^(1)` (i.e., 1 unpaired electron) THUS, complex of cobalt has MAXIMUM unpaired electrons (viz. 5) and hence has highest paramagnetism.