Co-Ordination Compounds Question 233
Question: The diamagnetic species is:
(I) $ {{[ Cu{{( CN )}_4} ]}^{3-}} $
(II) $ {{[ Co{{( NH_3 )}_6} ]}^{3+}} $
(III) $ {{[ Ni{{( NH_3 )}_6} ]}^{2+}} $
(IV) $ {{[ Fe{{( CN )}_6} ]}^{3-}} $
Options:
A) I, III
B) I, II
C) III, IV
D) only IV
Show Answer
Answer:
Correct Answer: B
Solution:
(I) $ \underset{( Diamagnetic )}{\mathop{{{[Cu{{(CN)}_4}]}^{3}}^{-}}},\to \mu =0 $
(II) $ \underset{( Diamagnetic )}{\mathop{{{[ Co{{(NH_3)}_6} ]}^{3+}}}},\to \mu =0 $
(III) $ \underset{( Paramagnetic )}{\mathop{{{[ Ni{{( NH_3 )}_6} ]}^{2+}}}},\to \mu =\sqrt{8},BM $
(IV) $ \underset{( Paramagnetic )}{\mathop{{{[ Fe{{( CN )}_6} ]}^{3-}}}},\to \mu =\sqrt{3}BM $
