JEE Advanced Previous Year Questions (2021-2023): Coordination Compounds | Chemistry for JEE Main & Advanced PDF Download

 Page 1


JEE Advanced Previous Year Questions 
(2021-2023): Coordination Compounds 
2023 
Single Correct Type 
JEE Advanced 2023 Paper 1 Online 
Q1. Match the electronic configurations in List-I with appropriate metal complex ions in List-II 
and choose the correct option. 
[Atomic Number: ???? = ???? , ???? = ???? , ???? = ???? ] 
 
A. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
B. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
C. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
D. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
Ans: D 
1 . [ Fe ( H
2
O )
6
]
2 +
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
2 +
? 3 d
6
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
Page 2


JEE Advanced Previous Year Questions 
(2021-2023): Coordination Compounds 
2023 
Single Correct Type 
JEE Advanced 2023 Paper 1 Online 
Q1. Match the electronic configurations in List-I with appropriate metal complex ions in List-II 
and choose the correct option. 
[Atomic Number: ???? = ???? , ???? = ???? , ???? = ???? ] 
 
A. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
B. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
C. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
D. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
Ans: D 
1 . [ Fe ( H
2
O )
6
]
2 +
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
2 +
? 3 d
6
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
2. 
[ Mn ( H
2
O )
6
]
2 +
 
Mn ? (25 ) ? 3 d
5
4 s
2
 
Mn
2 +
? 3 d
5
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
3. 
[ CO ( NH
3
)
6
]
3 +
CO
3 +
? [Ar ] 3 d
6
 
NH
3
 is a strong field ligand. So, the pairing takes place. 
 
4. 
[ F e Cl
4
]
-
 
?? + 4 ( - 1 ) = - 1 
?? = + 3 
Fe (26 ) ? 3 d
6
4 s
2
 
Page 3


JEE Advanced Previous Year Questions 
(2021-2023): Coordination Compounds 
2023 
Single Correct Type 
JEE Advanced 2023 Paper 1 Online 
Q1. Match the electronic configurations in List-I with appropriate metal complex ions in List-II 
and choose the correct option. 
[Atomic Number: ???? = ???? , ???? = ???? , ???? = ???? ] 
 
A. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
B. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
C. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
D. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
Ans: D 
1 . [ Fe ( H
2
O )
6
]
2 +
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
2 +
? 3 d
6
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
2. 
[ Mn ( H
2
O )
6
]
2 +
 
Mn ? (25 ) ? 3 d
5
4 s
2
 
Mn
2 +
? 3 d
5
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
3. 
[ CO ( NH
3
)
6
]
3 +
CO
3 +
? [Ar ] 3 d
6
 
NH
3
 is a strong field ligand. So, the pairing takes place. 
 
4. 
[ F e Cl
4
]
-
 
?? + 4 ( - 1 ) = - 1 
?? = + 3 
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
+ 3
? [Ar ] 3 d
5
 
F e Cl
4
 is tetrahedral complex. 
 
5 [ COC l
4
]
2 -
 
CO ? 3 d
7
4 s
2
 
CO
2 +
? 3 d
7
 
 
? P ? 3 , Q ? 2 , R ? 4 , S ? 1 
Multiple Correct Type 
JEE Advanced 2023 Paper 2 Online 
 
Q2. The complex(es), which can exhibit the type of isomerism shown by [ ???? ( ????
?? )
?? ????
?? ], is(are) 
: [ e n = ?? ?? ?????? ?? ????
?? ????
?? ]  
A. [ ???? ( ???? ) ( ?? ???? )
?? ] 
B. [ ???? ( ????
?? )
?? ????
?? ] 
C. [ ???? ( ????
?? )
?? ????
?? ] 
D. [ ???? ( ???? )
?? ( ?? ?? ?? ) ( ????
?? ) ]
+
 
Ans: (C,D) 
[ Pt ( NH
3
)
2
Br
2
] 
Hybridisation : dsp ?
2
, geometry : square planar 
Page 4


JEE Advanced Previous Year Questions 
(2021-2023): Coordination Compounds 
2023 
Single Correct Type 
JEE Advanced 2023 Paper 1 Online 
Q1. Match the electronic configurations in List-I with appropriate metal complex ions in List-II 
and choose the correct option. 
[Atomic Number: ???? = ???? , ???? = ???? , ???? = ???? ] 
 
A. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
B. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
C. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
D. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
Ans: D 
1 . [ Fe ( H
2
O )
6
]
2 +
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
2 +
? 3 d
6
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
2. 
[ Mn ( H
2
O )
6
]
2 +
 
Mn ? (25 ) ? 3 d
5
4 s
2
 
Mn
2 +
? 3 d
5
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
3. 
[ CO ( NH
3
)
6
]
3 +
CO
3 +
? [Ar ] 3 d
6
 
NH
3
 is a strong field ligand. So, the pairing takes place. 
 
4. 
[ F e Cl
4
]
-
 
?? + 4 ( - 1 ) = - 1 
?? = + 3 
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
+ 3
? [Ar ] 3 d
5
 
F e Cl
4
 is tetrahedral complex. 
 
5 [ COC l
4
]
2 -
 
CO ? 3 d
7
4 s
2
 
CO
2 +
? 3 d
7
 
 
? P ? 3 , Q ? 2 , R ? 4 , S ? 1 
Multiple Correct Type 
JEE Advanced 2023 Paper 2 Online 
 
Q2. The complex(es), which can exhibit the type of isomerism shown by [ ???? ( ????
?? )
?? ????
?? ], is(are) 
: [ e n = ?? ?? ?????? ?? ????
?? ????
?? ]  
A. [ ???? ( ???? ) ( ?? ???? )
?? ] 
B. [ ???? ( ????
?? )
?? ????
?? ] 
C. [ ???? ( ????
?? )
?? ????
?? ] 
D. [ ???? ( ???? )
?? ( ?? ?? ?? ) ( ????
?? ) ]
+
 
Ans: (C,D) 
[ Pt ( NH
3
)
2
Br
2
] 
Hybridisation : dsp ?
2
, geometry : square planar 
 
(A) [ Pt (en ) ( S CN )
2
] : square planar, cis-trans not possible 
(B) [ Zn ( NH
3
)
2
Cl
2
] : tetrahedral, cis-trans not possible 
(C) [ Pt ( NH
3
)
2
Cl
4
] : octahedral, cis-trans possible 
 
(D) [ Cr (en )
2
( H
2
O ) SO
4
]
+
: Octahedral 
 
 
 
 
 
 
Page 5


JEE Advanced Previous Year Questions 
(2021-2023): Coordination Compounds 
2023 
Single Correct Type 
JEE Advanced 2023 Paper 1 Online 
Q1. Match the electronic configurations in List-I with appropriate metal complex ions in List-II 
and choose the correct option. 
[Atomic Number: ???? = ???? , ???? = ???? , ???? = ???? ] 
 
A. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
B. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
C. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
D. ?? ? ?? ; ?? ? ?? ; ?? ? ?? ; ?? ? ?? 
Ans: D 
1 . [ Fe ( H
2
O )
6
]
2 +
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
2 +
? 3 d
6
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
2. 
[ Mn ( H
2
O )
6
]
2 +
 
Mn ? (25 ) ? 3 d
5
4 s
2
 
Mn
2 +
? 3 d
5
, H
2
O is a weak field ligand. 
So, the pairing does not take place. 
 
3. 
[ CO ( NH
3
)
6
]
3 +
CO
3 +
? [Ar ] 3 d
6
 
NH
3
 is a strong field ligand. So, the pairing takes place. 
 
4. 
[ F e Cl
4
]
-
 
?? + 4 ( - 1 ) = - 1 
?? = + 3 
Fe (26 ) ? 3 d
6
4 s
2
 
Fe
+ 3
? [Ar ] 3 d
5
 
F e Cl
4
 is tetrahedral complex. 
 
5 [ COC l
4
]
2 -
 
CO ? 3 d
7
4 s
2
 
CO
2 +
? 3 d
7
 
 
? P ? 3 , Q ? 2 , R ? 4 , S ? 1 
Multiple Correct Type 
JEE Advanced 2023 Paper 2 Online 
 
Q2. The complex(es), which can exhibit the type of isomerism shown by [ ???? ( ????
?? )
?? ????
?? ], is(are) 
: [ e n = ?? ?? ?????? ?? ????
?? ????
?? ]  
A. [ ???? ( ???? ) ( ?? ???? )
?? ] 
B. [ ???? ( ????
?? )
?? ????
?? ] 
C. [ ???? ( ????
?? )
?? ????
?? ] 
D. [ ???? ( ???? )
?? ( ?? ?? ?? ) ( ????
?? ) ]
+
 
Ans: (C,D) 
[ Pt ( NH
3
)
2
Br
2
] 
Hybridisation : dsp ?
2
, geometry : square planar 
 
(A) [ Pt (en ) ( S CN )
2
] : square planar, cis-trans not possible 
(B) [ Zn ( NH
3
)
2
Cl
2
] : tetrahedral, cis-trans not possible 
(C) [ Pt ( NH
3
)
2
Cl
4
] : octahedral, cis-trans possible 
 
(D) [ Cr (en )
2
( H
2
O ) SO
4
]
+
: Octahedral 
 
 
 
 
 
 
2022 
JEE Advanced 2022 Paper 1 Online 
MCQ (Single Correct Answer) +3 -1 
Q3. LIST-I contains metal species and LIST-II contains their properties. 
 
[Given: Atomic number of ???? = ???? , ???? = ???? , ???? = ???? ] 
Match each metal species in LIST-I with their properties in LIST-II, and choose the correct 
option 
(A) I ? ?? , ?? ; ???? ? ?? , ?? ; III ? ?? , ?? ; IV ? ?? , ?? 
(B) I ? R, S; II ? P, T; III ? P, Q; IV ? Q, T 
(C) I ? ?? , ?? ; II ? ?? , ?? ; III ? ?? , ?? ; IV ? ?? , ?? 
(D) I ? Q, T; II ? S, T; III ? P, T; IV ? Q, R 
Ans: (A) 
(I) [ ???? (???? )
6
]
4 -
 
?? ?? + 2
= [ ???? ] 3 ?? 4
4 ?? 0
 
It is d
2
sp
3
 hybridised as CN
-
is a strong field ligand. 
(II) [ R u Cl
6
]
2 -
 
?? ?? + 4
= [ ???? ] 4 ?? 4
5 ?? 0
 
?? 2 ?? set contains 4 electron. 
(III) [ Cr ( H
2
O )
6
]
2 +
 
?? ?? + 2
= [ ???? ] 3 ?? 4
4 ?? 0
 
It has 4 unpaired e
-
as H
2
O is weak field ligand. 
So, its ?? = 4 . 9 B.M. 
 (IV) [ Fe ( H
2
O )
6
]
2 +
Fe
+ 2
= [Ar ] 3 ?? 6
4 ?? 0
? = ?? 2 ?? 4
?? ?? 2
 
It has 4 unpaired e
-
, its ?? = 4 . 9 B.M.