QBManager

9 RBTS PAPER

162449 The oxidation states of $Co$ and $Cr$ respectively in the following complex are :
$[Co {({NH}_{3})}_{6}] {[Cr {({NH}_{3})}_{2} {Cl}_{4}]}_{3}$

1

+ 3, + 4

2

+ 3, + 2

3

+ 2, + 3

4

+ 3, + 3

NCERT-XII-122

9 RBTS PAPER

162419 Which of the following statement is correct :

1

La (OH)_{3}

is more basic than

Lu (OH)_{3}

2 In lanthanoid series, ionic radius of

{Ln}^{+ 3}

ion increases with increasing atomic number

3 La is an elements of lanthanoid series

4 All of these

Explanation:

$La (OH)_{3}$ is more basic than $Lu (OH)_{3}$

NCERT-XII-109

9 RBTS PAPER

162420 In ${Cr}_{2} O_{7}^{2 -}$

1

4 Cr - O

bonds are equivalent

2

6 Cr - O

bonds are equivalent

3 All

Cr - O

bonds are equivalent

4 All of these

Explanation:

The dicromate ion consist of two tetra hedral units in which $6 Cr - 0$ bonds are equvalent in nature.

NCERT-XII-106

9 RBTS PAPER

162421 Most of the transition metal compounds are coloured generally due to :

1 d-d transition and charge transfer

2 small size

3 variable oxidation state

4 None of these

Explanation:

$d$ -d-transition is main cause for showing colour nature.

NCERT-XII-103

9 RBTS PAPER

162422 Which of the two have almost similar size :

1

_{22} Ti

and

_{40} Zr

2

_{25} Mn

and

_{30} Zn

3

_{39} Y

and

_{57} La

4

_{20} Ca

and

_{31} Ir

NCERT-XII-94

9 RBTS PAPER

162449 The oxidation states of $Co$ and $Cr$ respectively in the following complex are :
$[Co {({NH}_{3})}_{6}] {[Cr {({NH}_{3})}_{2} {Cl}_{4}]}_{3}$

1

+ 3, + 4

2

+ 3, + 2

3

+ 2, + 3

4

+ 3, + 3

NCERT-XII-122

9 RBTS PAPER

162419 Which of the following statement is correct :

1

La (OH)_{3}

is more basic than

Lu (OH)_{3}

2 In lanthanoid series, ionic radius of

{Ln}^{+ 3}

ion increases with increasing atomic number

3 La is an elements of lanthanoid series

4 All of these

Explanation:

$La (OH)_{3}$ is more basic than $Lu (OH)_{3}$

NCERT-XII-109

9 RBTS PAPER

162420 In ${Cr}_{2} O_{7}^{2 -}$

1

4 Cr - O

bonds are equivalent

2

6 Cr - O

bonds are equivalent

3 All

Cr - O

bonds are equivalent

4 All of these

Explanation:

The dicromate ion consist of two tetra hedral units in which $6 Cr - 0$ bonds are equvalent in nature.

NCERT-XII-106

9 RBTS PAPER

162421 Most of the transition metal compounds are coloured generally due to :

1 d-d transition and charge transfer

2 small size

3 variable oxidation state

4 None of these

Explanation:

$d$ -d-transition is main cause for showing colour nature.

NCERT-XII-103

9 RBTS PAPER

162422 Which of the two have almost similar size :

1

_{22} Ti

and

_{40} Zr

2

_{25} Mn

and

_{30} Zn

3

_{39} Y

and

_{57} La

4

_{20} Ca

and

_{31} Ir

NCERT-XII-94

9 RBTS PAPER

162449 The oxidation states of $Co$ and $Cr$ respectively in the following complex are :
$[Co {({NH}_{3})}_{6}] {[Cr {({NH}_{3})}_{2} {Cl}_{4}]}_{3}$

1

+ 3, + 4

2

+ 3, + 2

3

+ 2, + 3

4

+ 3, + 3

NCERT-XII-122

9 RBTS PAPER

162419 Which of the following statement is correct :

1

La (OH)_{3}

is more basic than

Lu (OH)_{3}

2 In lanthanoid series, ionic radius of

{Ln}^{+ 3}

ion increases with increasing atomic number

3 La is an elements of lanthanoid series

4 All of these

Explanation:

$La (OH)_{3}$ is more basic than $Lu (OH)_{3}$

NCERT-XII-109

9 RBTS PAPER

162420 In ${Cr}_{2} O_{7}^{2 -}$

1

4 Cr - O

bonds are equivalent

2

6 Cr - O

bonds are equivalent

3 All

Cr - O

bonds are equivalent

4 All of these

Explanation:

The dicromate ion consist of two tetra hedral units in which $6 Cr - 0$ bonds are equvalent in nature.

NCERT-XII-106

9 RBTS PAPER

162421 Most of the transition metal compounds are coloured generally due to :

1 d-d transition and charge transfer

2 small size

3 variable oxidation state

4 None of these

Explanation:

$d$ -d-transition is main cause for showing colour nature.

NCERT-XII-103

9 RBTS PAPER

162422 Which of the two have almost similar size :

1

_{22} Ti

and

_{40} Zr

2

_{25} Mn

and

_{30} Zn

3

_{39} Y

and

_{57} La

4

_{20} Ca

and

_{31} Ir

NCERT-XII-94

9 RBTS PAPER

162449 The oxidation states of $Co$ and $Cr$ respectively in the following complex are :
$[Co {({NH}_{3})}_{6}] {[Cr {({NH}_{3})}_{2} {Cl}_{4}]}_{3}$

1

+ 3, + 4

2

+ 3, + 2

3

+ 2, + 3

4

+ 3, + 3

NCERT-XII-122

9 RBTS PAPER

162419 Which of the following statement is correct :

1

La (OH)_{3}

is more basic than

Lu (OH)_{3}

2 In lanthanoid series, ionic radius of

{Ln}^{+ 3}

ion increases with increasing atomic number

3 La is an elements of lanthanoid series

4 All of these

Explanation:

$La (OH)_{3}$ is more basic than $Lu (OH)_{3}$

NCERT-XII-109

9 RBTS PAPER

162420 In ${Cr}_{2} O_{7}^{2 -}$

1

4 Cr - O

bonds are equivalent

2

6 Cr - O

bonds are equivalent

3 All

Cr - O

bonds are equivalent

4 All of these

Explanation:

The dicromate ion consist of two tetra hedral units in which $6 Cr - 0$ bonds are equvalent in nature.

NCERT-XII-106

9 RBTS PAPER

162421 Most of the transition metal compounds are coloured generally due to :

1 d-d transition and charge transfer

2 small size

3 variable oxidation state

4 None of these

Explanation:

$d$ -d-transition is main cause for showing colour nature.

NCERT-XII-103

9 RBTS PAPER

162422 Which of the two have almost similar size :

1

_{22} Ti

and

_{40} Zr

2

_{25} Mn

and

_{30} Zn

3

_{39} Y

and

_{57} La

4

_{20} Ca

and

_{31} Ir

NCERT-XII-94

9 RBTS PAPER

162449 The oxidation states of $Co$ and $Cr$ respectively in the following complex are :
$[Co {({NH}_{3})}_{6}] {[Cr {({NH}_{3})}_{2} {Cl}_{4}]}_{3}$

1

+ 3, + 4

2

+ 3, + 2

3

+ 2, + 3

4

+ 3, + 3

NCERT-XII-122

9 RBTS PAPER

162419 Which of the following statement is correct :

1

La (OH)_{3}

is more basic than

Lu (OH)_{3}

2 In lanthanoid series, ionic radius of

{Ln}^{+ 3}

ion increases with increasing atomic number

3 La is an elements of lanthanoid series

4 All of these

Explanation:

$La (OH)_{3}$ is more basic than $Lu (OH)_{3}$

NCERT-XII-109

9 RBTS PAPER

162420 In ${Cr}_{2} O_{7}^{2 -}$

1

4 Cr - O

bonds are equivalent

2

6 Cr - O

bonds are equivalent

3 All

Cr - O

bonds are equivalent

4 All of these

Explanation:

The dicromate ion consist of two tetra hedral units in which $6 Cr - 0$ bonds are equvalent in nature.

NCERT-XII-106

9 RBTS PAPER

162421 Most of the transition metal compounds are coloured generally due to :

1 d-d transition and charge transfer

2 small size

3 variable oxidation state

4 None of these

Explanation:

$d$ -d-transition is main cause for showing colour nature.

NCERT-XII-103

9 RBTS PAPER

162422 Which of the two have almost similar size :

1

_{22} Ti

and

_{40} Zr

2

_{25} Mn

and

_{30} Zn

3

_{39} Y

and

_{57} La

4

_{20} Ca

and

_{31} Ir

NCERT-XII-94

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