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COORDINATION COMPOUNDS

28633 The oxidation number of $C r$ in $[C r (N H_{3})_{6}] C l_{3}$ is

1

8

2

6

3

4

4

3

Explanation:

(d) $x + 6 \times (0) + 3 \times (- 1) = 0$
$x - 3 = 0$ , $x = + 3,$ Oxidation number of $C r$ is $= + 3.$

COORDINATION COMPOUNDS

28634 In $[N i {(N H_{3})}_{4}] S O_{4},$ the $E . A . N .$ of $N i$ is

1

34

2

35

3

36

4

37

Explanation:

(a) $E A N$ = (atomic no) $-$ (oxidation state) $+ (2 \times$ number of Ligands) $= 28 - 2 + 2 \times 4 = 34$

COORDINATION COMPOUNDS

28635 $I U P A C$ name of $[C o (O N O) (N H_{3})_{5} C l_{2}]$ is

1 Pentaammine nitro cobalt

(I I I)

chloride

2 Pentaammine nitrito cobalt

(I I I)

chloride

3 Pentaammine nitroso cobalt

(I I I)

chloride

4 Pentaammine oxo-nitro cobalt

(I I I)

chloride

Explanation:

(b) Follow $I U P A C$ rule.

COORDINATION COMPOUNDS

28636 The oxidation number of $P t$ in $[P t (C_{2} H_{4}) C l_{3}]^{-}$ is

1

+ 1

2

+ 2

3

+ 3

4

+ 4

Explanation:

(b) $[\underset{x}{P t} \underset{0}{(C_{2}} H_{4}) \underset{- 1}{C l_{3}}]^{-}$
$x + 0 + 3 x (- 1) = - 1$ , $x - 3 = - 1,$ $x = + 2.$

COORDINATION COMPOUNDS

28633 The oxidation number of $C r$ in $[C r (N H_{3})_{6}] C l_{3}$ is

1

8

2

6

3

4

4

3

Explanation:

(d) $x + 6 \times (0) + 3 \times (- 1) = 0$
$x - 3 = 0$ , $x = + 3,$ Oxidation number of $C r$ is $= + 3.$

COORDINATION COMPOUNDS

28634 In $[N i {(N H_{3})}_{4}] S O_{4},$ the $E . A . N .$ of $N i$ is

1

34

2

35

3

36

4

37

Explanation:

(a) $E A N$ = (atomic no) $-$ (oxidation state) $+ (2 \times$ number of Ligands) $= 28 - 2 + 2 \times 4 = 34$

COORDINATION COMPOUNDS

28635 $I U P A C$ name of $[C o (O N O) (N H_{3})_{5} C l_{2}]$ is

1 Pentaammine nitro cobalt

(I I I)

chloride

2 Pentaammine nitrito cobalt

(I I I)

chloride

3 Pentaammine nitroso cobalt

(I I I)

chloride

4 Pentaammine oxo-nitro cobalt

(I I I)

chloride

Explanation:

(b) Follow $I U P A C$ rule.

COORDINATION COMPOUNDS

28636 The oxidation number of $P t$ in $[P t (C_{2} H_{4}) C l_{3}]^{-}$ is

1

+ 1

2

+ 2

3

+ 3

4

+ 4

Explanation:

(b) $[\underset{x}{P t} \underset{0}{(C_{2}} H_{4}) \underset{- 1}{C l_{3}}]^{-}$
$x + 0 + 3 x (- 1) = - 1$ , $x - 3 = - 1,$ $x = + 2.$

COORDINATION COMPOUNDS

28633 The oxidation number of $C r$ in $[C r (N H_{3})_{6}] C l_{3}$ is

1

8

2

6

3

4

4

3

Explanation:

(d) $x + 6 \times (0) + 3 \times (- 1) = 0$
$x - 3 = 0$ , $x = + 3,$ Oxidation number of $C r$ is $= + 3.$

COORDINATION COMPOUNDS

28634 In $[N i {(N H_{3})}_{4}] S O_{4},$ the $E . A . N .$ of $N i$ is

1

34

2

35

3

36

4

37

Explanation:

(a) $E A N$ = (atomic no) $-$ (oxidation state) $+ (2 \times$ number of Ligands) $= 28 - 2 + 2 \times 4 = 34$

COORDINATION COMPOUNDS

28635 $I U P A C$ name of $[C o (O N O) (N H_{3})_{5} C l_{2}]$ is

1 Pentaammine nitro cobalt

(I I I)

chloride

2 Pentaammine nitrito cobalt

(I I I)

chloride

3 Pentaammine nitroso cobalt

(I I I)

chloride

4 Pentaammine oxo-nitro cobalt

(I I I)

chloride

Explanation:

(b) Follow $I U P A C$ rule.

COORDINATION COMPOUNDS

28636 The oxidation number of $P t$ in $[P t (C_{2} H_{4}) C l_{3}]^{-}$ is

1

+ 1

2

+ 2

3

+ 3

4

+ 4

Explanation:

(b) $[\underset{x}{P t} \underset{0}{(C_{2}} H_{4}) \underset{- 1}{C l_{3}}]^{-}$
$x + 0 + 3 x (- 1) = - 1$ , $x - 3 = - 1,$ $x = + 2.$

COORDINATION COMPOUNDS

28633 The oxidation number of $C r$ in $[C r (N H_{3})_{6}] C l_{3}$ is

1

8

2

6

3

4

4

3

Explanation:

(d) $x + 6 \times (0) + 3 \times (- 1) = 0$
$x - 3 = 0$ , $x = + 3,$ Oxidation number of $C r$ is $= + 3.$

COORDINATION COMPOUNDS

28634 In $[N i {(N H_{3})}_{4}] S O_{4},$ the $E . A . N .$ of $N i$ is

1

34

2

35

3

36

4

37

Explanation:

(a) $E A N$ = (atomic no) $-$ (oxidation state) $+ (2 \times$ number of Ligands) $= 28 - 2 + 2 \times 4 = 34$

COORDINATION COMPOUNDS

28635 $I U P A C$ name of $[C o (O N O) (N H_{3})_{5} C l_{2}]$ is

1 Pentaammine nitro cobalt

(I I I)

chloride

2 Pentaammine nitrito cobalt

(I I I)

chloride

3 Pentaammine nitroso cobalt

(I I I)

chloride

4 Pentaammine oxo-nitro cobalt

(I I I)

chloride

Explanation:

(b) Follow $I U P A C$ rule.

COORDINATION COMPOUNDS

28636 The oxidation number of $P t$ in $[P t (C_{2} H_{4}) C l_{3}]^{-}$ is

1

+ 1

2

+ 2

3

+ 3

4

+ 4

Explanation:

(b) $[\underset{x}{P t} \underset{0}{(C_{2}} H_{4}) \underset{- 1}{C l_{3}}]^{-}$
$x + 0 + 3 x (- 1) = - 1$ , $x - 3 = - 1,$ $x = + 2.$

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