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COORDINATION COMPOUNDS

28637 The oxidation state of cobalt in the complex compound $[C o {(N H_{3})}_{6}] C l_{3}$ is

1

+ 3

2

+ 6

3

+ 5

4

+ 2

Explanation:

(a) $[C o (N H_{3})_{6}] C l_{3} \to [C o (N H_{3})_{6}]^{3 +} + 3 C l^{-}$
$x + 6 (0) = + 3 \Rightarrow x = + 3$ .

COORDINATION COMPOUNDS

28638 The correct $I U P A C$ name of potassium cuprochloride is

1 Potassium copper

(I)

tetrachloride

2 Potassium tetrachlorocuprate

(I)

3 Tetrachloropotassium cuprate

(I)

4 Tetrachlorocopper

(I)

potassiate

Explanation:

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

COORDINATION COMPOUNDS

28639 The effective atomic number of cobalt in the complex $[C o (N H_{3})_{6}]^{3 +}$ is

1

36

2

33

3

24

4

30

Explanation:

(a) $E A N$ = at. no. of central atom $-$ oxidation state $+ 2 \times$ (no. of ligands) $= 27 - 3 + 2 \times 6 = 36.$

COORDINATION COMPOUNDS

28640 $I U P A C$ name of $K_{3} F e (C N)_{6}$ is

1 Potassium ferrocyanide

(I I)

2 Potassium hexaferrocyanate

(I I I)

3 Potassium ferrohexacyanate

(I I)

4 Potassium hexacyanoferrate

(I I I)

Explanation:

(d) Follow $I U P A C$ rules for nomenclature.

COORDINATION COMPOUNDS

28637 The oxidation state of cobalt in the complex compound $[C o {(N H_{3})}_{6}] C l_{3}$ is

1

+ 3

2

+ 6

3

+ 5

4

+ 2

Explanation:

(a) $[C o (N H_{3})_{6}] C l_{3} \to [C o (N H_{3})_{6}]^{3 +} + 3 C l^{-}$
$x + 6 (0) = + 3 \Rightarrow x = + 3$ .

COORDINATION COMPOUNDS

28638 The correct $I U P A C$ name of potassium cuprochloride is

1 Potassium copper

(I)

tetrachloride

2 Potassium tetrachlorocuprate

(I)

3 Tetrachloropotassium cuprate

(I)

4 Tetrachlorocopper

(I)

potassiate

Explanation:

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

COORDINATION COMPOUNDS

28639 The effective atomic number of cobalt in the complex $[C o (N H_{3})_{6}]^{3 +}$ is

1

36

2

33

3

24

4

30

Explanation:

(a) $E A N$ = at. no. of central atom $-$ oxidation state $+ 2 \times$ (no. of ligands) $= 27 - 3 + 2 \times 6 = 36.$

COORDINATION COMPOUNDS

28640 $I U P A C$ name of $K_{3} F e (C N)_{6}$ is

1 Potassium ferrocyanide

(I I)

2 Potassium hexaferrocyanate

(I I I)

3 Potassium ferrohexacyanate

(I I)

4 Potassium hexacyanoferrate

(I I I)

Explanation:

(d) Follow $I U P A C$ rules for nomenclature.

COORDINATION COMPOUNDS

28637 The oxidation state of cobalt in the complex compound $[C o {(N H_{3})}_{6}] C l_{3}$ is

1

+ 3

2

+ 6

3

+ 5

4

+ 2

Explanation:

(a) $[C o (N H_{3})_{6}] C l_{3} \to [C o (N H_{3})_{6}]^{3 +} + 3 C l^{-}$
$x + 6 (0) = + 3 \Rightarrow x = + 3$ .

COORDINATION COMPOUNDS

28638 The correct $I U P A C$ name of potassium cuprochloride is

1 Potassium copper

(I)

tetrachloride

2 Potassium tetrachlorocuprate

(I)

3 Tetrachloropotassium cuprate

(I)

4 Tetrachlorocopper

(I)

potassiate

Explanation:

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

COORDINATION COMPOUNDS

28639 The effective atomic number of cobalt in the complex $[C o (N H_{3})_{6}]^{3 +}$ is

1

36

2

33

3

24

4

30

Explanation:

(a) $E A N$ = at. no. of central atom $-$ oxidation state $+ 2 \times$ (no. of ligands) $= 27 - 3 + 2 \times 6 = 36.$

COORDINATION COMPOUNDS

28640 $I U P A C$ name of $K_{3} F e (C N)_{6}$ is

1 Potassium ferrocyanide

(I I)

2 Potassium hexaferrocyanate

(I I I)

3 Potassium ferrohexacyanate

(I I)

4 Potassium hexacyanoferrate

(I I I)

Explanation:

(d) Follow $I U P A C$ rules for nomenclature.

COORDINATION COMPOUNDS

28637 The oxidation state of cobalt in the complex compound $[C o {(N H_{3})}_{6}] C l_{3}$ is

1

+ 3

2

+ 6

3

+ 5

4

+ 2

Explanation:

(a) $[C o (N H_{3})_{6}] C l_{3} \to [C o (N H_{3})_{6}]^{3 +} + 3 C l^{-}$
$x + 6 (0) = + 3 \Rightarrow x = + 3$ .

COORDINATION COMPOUNDS

28638 The correct $I U P A C$ name of potassium cuprochloride is

1 Potassium copper

(I)

tetrachloride

2 Potassium tetrachlorocuprate

(I)

3 Tetrachloropotassium cuprate

(I)

4 Tetrachlorocopper

(I)

potassiate

Explanation:

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

COORDINATION COMPOUNDS

28639 The effective atomic number of cobalt in the complex $[C o (N H_{3})_{6}]^{3 +}$ is

1

36

2

33

3

24

4

30

Explanation:

(a) $E A N$ = at. no. of central atom $-$ oxidation state $+ 2 \times$ (no. of ligands) $= 27 - 3 + 2 \times 6 = 36.$

COORDINATION COMPOUNDS

28640 $I U P A C$ name of $K_{3} F e (C N)_{6}$ is

1 Potassium ferrocyanide

(I I)

2 Potassium hexaferrocyanate

(I I I)

3 Potassium ferrohexacyanate

(I I)

4 Potassium hexacyanoferrate

(I I I)

Explanation:

(d) Follow $I U P A C$ rules for nomenclature.