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1
JEE Main 2018 (Online) 15th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
The correct combination is :
A
[Ni(CN)4]2- $$-$$ tetrahedral ;

[Ni(CO)4] $$-$$ paramagnetic
B
[Ni(Cl)4]2- $$-$$ paramagnetic ;

[Ni(CO)4] $$-$$ tetrahedral
C
[Ni(Cl)4]2- $$-$$ square-planar ;

[Ni(CN)4] 2-$$-$$ paramagnetic
D
[Ni(Cl)4]2- $$-$$ diamagnetic ;

[Ni(CO)4] $$-$$square-planar
2
JEE Main 2017 (Online) 9th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
[Co2(CO)8] displays :
A
one Co−Co bond, six terminal CO and two bridging CO
B
one Co−Co bond, four terminal CO and four bridging CO
C
no Co−Co bond, six terminal CO and two bridging CO
D
no Co−Co bond, four terminal CO and four bridging CO
3
JEE Main 2017 (Offline)
MCQ (Single Correct Answer)
+4
-1
Change Language
On treatment of 100 mL of 0.1 M solution of CoCl3. 6H2O with excess AgNO3; 1.2 $$\times$$ 1022 ions are precipitated. The complex is :
A
[Co(H2O)3Cl3].3H2O
B
[Co(H2O)6]Cl3
C
[Co(H2O)5Cl]Cl2.H2O
D
[Co(H2O)4Cl2]Cl.2H2O
4
JEE Main 2016 (Online) 10th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
Change Language
Which of the following is an example of homoleptic complex?
A
[Co(NH3)6]Cl3
B
[Pt(NH3)2Cl2]
C
[Co(NH3)4Cl2]
D
[Co(NH3)5Cl]Cl2
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