QBManager

COORDINATION COMPOUNDS

28624 The IUPAC name of $[C o {(N H_{3})}_{3} {(N O_{2})}_{3}]$ is

1 Triamminetrinitro N-cobalt

(I I I)

2 Trinitrotriammine cobalt

(I I)

3 Trinitrotriammine cobalt

(I I I)

ion

4 Trinitritriammine cobaltate

(I I I)

Explanation:

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

COORDINATION COMPOUNDS

28625 In $K_{4} [F e {(C N)}_{6}],$ the $E . A . N .$ of $F e$ is

1

33

2

35

3

36

4

26

Explanation:

$E A N$ $=$ Atomic number $-$ Oxidation state $+ 2 \times$ number of Ligands $= 26 - 2 + 2 (6) = 36.$

COORDINATION COMPOUNDS

28626 Which of the following pairs is not correctly matched

1 Effective atomic number of

P t

in

{[P t C l_{6}]}^{2 -} = 84

2 Absorption peak for

{[C r^{I I I} {(N H_{3})}_{6}]}^{+ 3} = 21680 c m^{- 1}

3 Crystal field stabilization energy of

d^{2}

in weak ligand field

= (-) 0.8 Δ_{0}

4 Example of weak ligand field for

d^{5}

configuration

= {[M n^{I I} F_{6}]}^{- 4}

Explanation:

(a) $E A N$ of $P t$ in $[P t C l_{6}]^{2 -} = 80$

COORDINATION COMPOUNDS

28627 The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

1

I I

2

I V

3

V I

4

I I I

Explanation:

(b) $N a_{2} [C r F_{4} O]$
$x + 4 (- 1) + (- 2) = - 2$
$x - 6 = - 2$ $\Rightarrow$ $x = + 4$ .

COORDINATION COMPOUNDS

28628 The $I U P A C$ name of $K_{4} [F e {(C N)}_{6}]$ is

1 Potassium hexacyanoferrate

(I I)

2 Potassium ferrocyanide

3 Tetrapotassium hexacyanoferrate

(I I)

4 Tetrapotassium ferroushexacyanide

(I I)

Explanation:

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

COORDINATION COMPOUNDS

28624 The IUPAC name of $[C o {(N H_{3})}_{3} {(N O_{2})}_{3}]$ is

1 Triamminetrinitro N-cobalt

(I I I)

2 Trinitrotriammine cobalt

(I I)

3 Trinitrotriammine cobalt

(I I I)

ion

4 Trinitritriammine cobaltate

(I I I)

Explanation:

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

COORDINATION COMPOUNDS

28625 In $K_{4} [F e {(C N)}_{6}],$ the $E . A . N .$ of $F e$ is

1

33

2

35

3

36

4

26

Explanation:

$E A N$ $=$ Atomic number $-$ Oxidation state $+ 2 \times$ number of Ligands $= 26 - 2 + 2 (6) = 36.$

COORDINATION COMPOUNDS

28626 Which of the following pairs is not correctly matched

1 Effective atomic number of

P t

in

{[P t C l_{6}]}^{2 -} = 84

2 Absorption peak for

{[C r^{I I I} {(N H_{3})}_{6}]}^{+ 3} = 21680 c m^{- 1}

3 Crystal field stabilization energy of

d^{2}

in weak ligand field

= (-) 0.8 Δ_{0}

4 Example of weak ligand field for

d^{5}

configuration

= {[M n^{I I} F_{6}]}^{- 4}

Explanation:

(a) $E A N$ of $P t$ in $[P t C l_{6}]^{2 -} = 80$

COORDINATION COMPOUNDS

28627 The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

1

I I

2

I V

3

V I

4

I I I

Explanation:

(b) $N a_{2} [C r F_{4} O]$
$x + 4 (- 1) + (- 2) = - 2$
$x - 6 = - 2$ $\Rightarrow$ $x = + 4$ .

COORDINATION COMPOUNDS

28628 The $I U P A C$ name of $K_{4} [F e {(C N)}_{6}]$ is

1 Potassium hexacyanoferrate

(I I)

2 Potassium ferrocyanide

3 Tetrapotassium hexacyanoferrate

(I I)

4 Tetrapotassium ferroushexacyanide

(I I)

Explanation:

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

COORDINATION COMPOUNDS

28624 The IUPAC name of $[C o {(N H_{3})}_{3} {(N O_{2})}_{3}]$ is

1 Triamminetrinitro N-cobalt

(I I I)

2 Trinitrotriammine cobalt

(I I)

3 Trinitrotriammine cobalt

(I I I)

ion

4 Trinitritriammine cobaltate

(I I I)

Explanation:

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

COORDINATION COMPOUNDS

28625 In $K_{4} [F e {(C N)}_{6}],$ the $E . A . N .$ of $F e$ is

1

33

2

35

3

36

4

26

Explanation:

$E A N$ $=$ Atomic number $-$ Oxidation state $+ 2 \times$ number of Ligands $= 26 - 2 + 2 (6) = 36.$

COORDINATION COMPOUNDS

28626 Which of the following pairs is not correctly matched

1 Effective atomic number of

P t

in

{[P t C l_{6}]}^{2 -} = 84

2 Absorption peak for

{[C r^{I I I} {(N H_{3})}_{6}]}^{+ 3} = 21680 c m^{- 1}

3 Crystal field stabilization energy of

d^{2}

in weak ligand field

= (-) 0.8 Δ_{0}

4 Example of weak ligand field for

d^{5}

configuration

= {[M n^{I I} F_{6}]}^{- 4}

Explanation:

(a) $E A N$ of $P t$ in $[P t C l_{6}]^{2 -} = 80$

COORDINATION COMPOUNDS

28627 The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

1

I I

2

I V

3

V I

4

I I I

Explanation:

(b) $N a_{2} [C r F_{4} O]$
$x + 4 (- 1) + (- 2) = - 2$
$x - 6 = - 2$ $\Rightarrow$ $x = + 4$ .

COORDINATION COMPOUNDS

28628 The $I U P A C$ name of $K_{4} [F e {(C N)}_{6}]$ is

1 Potassium hexacyanoferrate

(I I)

2 Potassium ferrocyanide

3 Tetrapotassium hexacyanoferrate

(I I)

4 Tetrapotassium ferroushexacyanide

(I I)

Explanation:

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

COORDINATION COMPOUNDS

28624 The IUPAC name of $[C o {(N H_{3})}_{3} {(N O_{2})}_{3}]$ is

1 Triamminetrinitro N-cobalt

(I I I)

2 Trinitrotriammine cobalt

(I I)

3 Trinitrotriammine cobalt

(I I I)

ion

4 Trinitritriammine cobaltate

(I I I)

Explanation:

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

COORDINATION COMPOUNDS

28625 In $K_{4} [F e {(C N)}_{6}],$ the $E . A . N .$ of $F e$ is

1

33

2

35

3

36

4

26

Explanation:

$E A N$ $=$ Atomic number $-$ Oxidation state $+ 2 \times$ number of Ligands $= 26 - 2 + 2 (6) = 36.$

COORDINATION COMPOUNDS

28626 Which of the following pairs is not correctly matched

1 Effective atomic number of

P t

in

{[P t C l_{6}]}^{2 -} = 84

2 Absorption peak for

{[C r^{I I I} {(N H_{3})}_{6}]}^{+ 3} = 21680 c m^{- 1}

3 Crystal field stabilization energy of

d^{2}

in weak ligand field

= (-) 0.8 Δ_{0}

4 Example of weak ligand field for

d^{5}

configuration

= {[M n^{I I} F_{6}]}^{- 4}

Explanation:

(a) $E A N$ of $P t$ in $[P t C l_{6}]^{2 -} = 80$

COORDINATION COMPOUNDS

28627 The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

1

I I

2

I V

3

V I

4

I I I

Explanation:

(b) $N a_{2} [C r F_{4} O]$
$x + 4 (- 1) + (- 2) = - 2$
$x - 6 = - 2$ $\Rightarrow$ $x = + 4$ .

COORDINATION COMPOUNDS

28628 The $I U P A C$ name of $K_{4} [F e {(C N)}_{6}]$ is

1 Potassium hexacyanoferrate

(I I)

2 Potassium ferrocyanide

3 Tetrapotassium hexacyanoferrate

(I I)

4 Tetrapotassium ferroushexacyanide

(I I)

Explanation:

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

COORDINATION COMPOUNDS

28624 The IUPAC name of $[C o {(N H_{3})}_{3} {(N O_{2})}_{3}]$ is

1 Triamminetrinitro N-cobalt

(I I I)

2 Trinitrotriammine cobalt

(I I)

3 Trinitrotriammine cobalt

(I I I)

ion

4 Trinitritriammine cobaltate

(I I I)

Explanation:

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

COORDINATION COMPOUNDS

28625 In $K_{4} [F e {(C N)}_{6}],$ the $E . A . N .$ of $F e$ is

1

33

2

35

3

36

4

26

Explanation:

$E A N$ $=$ Atomic number $-$ Oxidation state $+ 2 \times$ number of Ligands $= 26 - 2 + 2 (6) = 36.$

COORDINATION COMPOUNDS

28626 Which of the following pairs is not correctly matched

1 Effective atomic number of

P t

in

{[P t C l_{6}]}^{2 -} = 84

2 Absorption peak for

{[C r^{I I I} {(N H_{3})}_{6}]}^{+ 3} = 21680 c m^{- 1}

3 Crystal field stabilization energy of

d^{2}

in weak ligand field

= (-) 0.8 Δ_{0}

4 Example of weak ligand field for

d^{5}

configuration

= {[M n^{I I} F_{6}]}^{- 4}

Explanation:

(a) $E A N$ of $P t$ in $[P t C l_{6}]^{2 -} = 80$

COORDINATION COMPOUNDS

28627 The oxidation number of chromium in sodium tetrafluoro oxochromate complex is

1

I I

2

I V

3

V I

4

I I I

Explanation:

(b) $N a_{2} [C r F_{4} O]$
$x + 4 (- 1) + (- 2) = - 2$
$x - 6 = - 2$ $\Rightarrow$ $x = + 4$ .

COORDINATION COMPOUNDS

28628 The $I U P A C$ name of $K_{4} [F e {(C N)}_{6}]$ is

1 Potassium hexacyanoferrate

(I I)

2 Potassium ferrocyanide

3 Tetrapotassium hexacyanoferrate

(I I)

4 Tetrapotassium ferroushexacyanide

(I I)

Explanation:

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