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COORDINATION COMPOUNDS

28802 Dimethyl glyoxime gives a red precipitate with $N i^{2 +},$ which is used for its detection. To get this precipitate readily the best $p H$ range is

1

< 1

2

2 - 3

3

3 - 4

4

9 - 11

Explanation:

(d)This reaction carried out in alkaline $p H$ i.e., $9 - 11$

COORDINATION COMPOUNDS

28803 The $π -$ bonded organo metallic compound which has ethene as one of its component is

1 Zeise's salt

2 Ferrocene

3 Dibenzene chromium

4 Tetraethyl tin.

COORDINATION COMPOUNDS

28804 The coordination number and oxidation state of $C r$ in $K_{3} [C r {(C_{2} O_{4})}_{3}]$ are, respectively

1

4

and

+ 2

2

6

and

+ 3

3

3

and

+ 3

4

3

and

0

Explanation:

(b)Its coordination number will be $6$ because it is bonded with three bidentale ligands.
Oxi. No. of $C r$ in $\underset{- 1}{K_{3}} [C r \underset{- 2}{{(C_{2} O_{4})}_{3}}]$ is
$x + 3 (- 2) + 3 (+ 1) = 0$ $\Rightarrow x = + 3$

COORDINATION COMPOUNDS

28805 The complex compounds which result from the coordination of carbon monoxide are known as

1 Electronic

2 Carbonyls

3 Carbonates

4 Carbon permono

Explanation:

(b)e.g. $F e (C O)_{5}, N i (C O)_{4}$ etc.

COORDINATION COMPOUNDS

28802 Dimethyl glyoxime gives a red precipitate with $N i^{2 +},$ which is used for its detection. To get this precipitate readily the best $p H$ range is

1

< 1

2

2 - 3

3

3 - 4

4

9 - 11

Explanation:

(d)This reaction carried out in alkaline $p H$ i.e., $9 - 11$

COORDINATION COMPOUNDS

28803 The $π -$ bonded organo metallic compound which has ethene as one of its component is

1 Zeise's salt

2 Ferrocene

3 Dibenzene chromium

4 Tetraethyl tin.

COORDINATION COMPOUNDS

28804 The coordination number and oxidation state of $C r$ in $K_{3} [C r {(C_{2} O_{4})}_{3}]$ are, respectively

1

4

and

+ 2

2

6

and

+ 3

3

3

and

+ 3

4

3

and

0

Explanation:

(b)Its coordination number will be $6$ because it is bonded with three bidentale ligands.
Oxi. No. of $C r$ in $\underset{- 1}{K_{3}} [C r \underset{- 2}{{(C_{2} O_{4})}_{3}}]$ is
$x + 3 (- 2) + 3 (+ 1) = 0$ $\Rightarrow x = + 3$

COORDINATION COMPOUNDS

28805 The complex compounds which result from the coordination of carbon monoxide are known as

1 Electronic

2 Carbonyls

3 Carbonates

4 Carbon permono

Explanation:

(b)e.g. $F e (C O)_{5}, N i (C O)_{4}$ etc.

COORDINATION COMPOUNDS

28802 Dimethyl glyoxime gives a red precipitate with $N i^{2 +},$ which is used for its detection. To get this precipitate readily the best $p H$ range is

1

< 1

2

2 - 3

3

3 - 4

4

9 - 11

Explanation:

(d)This reaction carried out in alkaline $p H$ i.e., $9 - 11$

COORDINATION COMPOUNDS

28803 The $π -$ bonded organo metallic compound which has ethene as one of its component is

1 Zeise's salt

2 Ferrocene

3 Dibenzene chromium

4 Tetraethyl tin.

COORDINATION COMPOUNDS

28804 The coordination number and oxidation state of $C r$ in $K_{3} [C r {(C_{2} O_{4})}_{3}]$ are, respectively

1

4

and

+ 2

2

6

and

+ 3

3

3

and

+ 3

4

3

and

0

Explanation:

(b)Its coordination number will be $6$ because it is bonded with three bidentale ligands.
Oxi. No. of $C r$ in $\underset{- 1}{K_{3}} [C r \underset{- 2}{{(C_{2} O_{4})}_{3}}]$ is
$x + 3 (- 2) + 3 (+ 1) = 0$ $\Rightarrow x = + 3$

COORDINATION COMPOUNDS

28805 The complex compounds which result from the coordination of carbon monoxide are known as

1 Electronic

2 Carbonyls

3 Carbonates

4 Carbon permono

Explanation:

(b)e.g. $F e (C O)_{5}, N i (C O)_{4}$ etc.

COORDINATION COMPOUNDS

28802 Dimethyl glyoxime gives a red precipitate with $N i^{2 +},$ which is used for its detection. To get this precipitate readily the best $p H$ range is

1

< 1

2

2 - 3

3

3 - 4

4

9 - 11

Explanation:

(d)This reaction carried out in alkaline $p H$ i.e., $9 - 11$

COORDINATION COMPOUNDS

28803 The $π -$ bonded organo metallic compound which has ethene as one of its component is

1 Zeise's salt

2 Ferrocene

3 Dibenzene chromium

4 Tetraethyl tin.

COORDINATION COMPOUNDS

28804 The coordination number and oxidation state of $C r$ in $K_{3} [C r {(C_{2} O_{4})}_{3}]$ are, respectively

1

4

and

+ 2

2

6

and

+ 3

3

3

and

+ 3

4

3

and

0

Explanation:

(b)Its coordination number will be $6$ because it is bonded with three bidentale ligands.
Oxi. No. of $C r$ in $\underset{- 1}{K_{3}} [C r \underset{- 2}{{(C_{2} O_{4})}_{3}}]$ is
$x + 3 (- 2) + 3 (+ 1) = 0$ $\Rightarrow x = + 3$

COORDINATION COMPOUNDS

28805 The complex compounds which result from the coordination of carbon monoxide are known as

1 Electronic

2 Carbonyls

3 Carbonates

4 Carbon permono

Explanation:

(b)e.g. $F e (C O)_{5}, N i (C O)_{4}$ etc.

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