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CHXII08:THE D- & F-BLOCK ELEMENTS

321444 The transition metal ions responsible for colour in ruby and emerald are respectively:

1

{Cr}^{3 +}

and

{Cr}^{3 +}

2

{Co}^{3 +}

and

{Co}^{3 +}

3

{Co}^{3 +}

and

{Cr}^{3 +}

4

{Cr}^{3 +}

and

{Co}^{3 +}

JEE - 2016

CHXII08:THE D- & F-BLOCK ELEMENTS

321445 Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

1

{Ag}_{2} {SO}_{4}

2

{CuF}_{2}

3

{ZnF}_{2}

4

{Cu}_{2} {Cl}_{2}

CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
${[Ti {(H_{2} O)}_{6}]}^{3 +}$ is a coloured ion.
Reason :
Ti shows $+ 2, + 3, + 4$ oxidation states.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The presence of the +3 oxidation state in titanium results in a configuration of $[Ar] 3 d^{1}$ , allowing for d-d transitions. This characteristic gives rise to its capacity to exhibit coloration $Ti$ shows $+ 2, + 3, + 4$ oxidation states but it is not the explanation for assertion. So option (2) is correct.

CHXII08:THE D- & F-BLOCK ELEMENTS

321447 Regarding d- block elements some statements are given below.
(a) Their general electronic configuration is $n s^{0 or 1 or 2} (n - 1) d^{1 - 10}$ .
(b) They form coloured ions.
(c) They forms complex compounds
(d) Their ions are generally paramagnetic.
The correct statements are

1

a, b, d

2 b, c, d

3 a, b, c

4 a, b, c, d

CHXII08:THE D- & F-BLOCK ELEMENTS

321444 The transition metal ions responsible for colour in ruby and emerald are respectively:

1

{Cr}^{3 +}

and

{Cr}^{3 +}

2

{Co}^{3 +}

and

{Co}^{3 +}

3

{Co}^{3 +}

and

{Cr}^{3 +}

4

{Cr}^{3 +}

and

{Co}^{3 +}

JEE - 2016

CHXII08:THE D- & F-BLOCK ELEMENTS

321445 Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

1

{Ag}_{2} {SO}_{4}

2

{CuF}_{2}

3

{ZnF}_{2}

4

{Cu}_{2} {Cl}_{2}

CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
${[Ti {(H_{2} O)}_{6}]}^{3 +}$ is a coloured ion.
Reason :
Ti shows $+ 2, + 3, + 4$ oxidation states.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The presence of the +3 oxidation state in titanium results in a configuration of $[Ar] 3 d^{1}$ , allowing for d-d transitions. This characteristic gives rise to its capacity to exhibit coloration $Ti$ shows $+ 2, + 3, + 4$ oxidation states but it is not the explanation for assertion. So option (2) is correct.

CHXII08:THE D- & F-BLOCK ELEMENTS

321447 Regarding d- block elements some statements are given below.
(a) Their general electronic configuration is $n s^{0 or 1 or 2} (n - 1) d^{1 - 10}$ .
(b) They form coloured ions.
(c) They forms complex compounds
(d) Their ions are generally paramagnetic.
The correct statements are

1

a, b, d

2 b, c, d

3 a, b, c

4 a, b, c, d

CHXII08:THE D- & F-BLOCK ELEMENTS

321444 The transition metal ions responsible for colour in ruby and emerald are respectively:

1

{Cr}^{3 +}

and

{Cr}^{3 +}

2

{Co}^{3 +}

and

{Co}^{3 +}

3

{Co}^{3 +}

and

{Cr}^{3 +}

4

{Cr}^{3 +}

and

{Co}^{3 +}

JEE - 2016

CHXII08:THE D- & F-BLOCK ELEMENTS

321445 Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

1

{Ag}_{2} {SO}_{4}

2

{CuF}_{2}

3

{ZnF}_{2}

4

{Cu}_{2} {Cl}_{2}

CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
${[Ti {(H_{2} O)}_{6}]}^{3 +}$ is a coloured ion.
Reason :
Ti shows $+ 2, + 3, + 4$ oxidation states.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The presence of the +3 oxidation state in titanium results in a configuration of $[Ar] 3 d^{1}$ , allowing for d-d transitions. This characteristic gives rise to its capacity to exhibit coloration $Ti$ shows $+ 2, + 3, + 4$ oxidation states but it is not the explanation for assertion. So option (2) is correct.

CHXII08:THE D- & F-BLOCK ELEMENTS

321447 Regarding d- block elements some statements are given below.
(a) Their general electronic configuration is $n s^{0 or 1 or 2} (n - 1) d^{1 - 10}$ .
(b) They form coloured ions.
(c) They forms complex compounds
(d) Their ions are generally paramagnetic.
The correct statements are

1

a, b, d

2 b, c, d

3 a, b, c

4 a, b, c, d

CHXII08:THE D- & F-BLOCK ELEMENTS

321444 The transition metal ions responsible for colour in ruby and emerald are respectively:

1

{Cr}^{3 +}

and

{Cr}^{3 +}

2

{Co}^{3 +}

and

{Co}^{3 +}

3

{Co}^{3 +}

and

{Cr}^{3 +}

4

{Cr}^{3 +}

and

{Co}^{3 +}

JEE - 2016

CHXII08:THE D- & F-BLOCK ELEMENTS

321445 Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state?

1

{Ag}_{2} {SO}_{4}

2

{CuF}_{2}

3

{ZnF}_{2}

4

{Cu}_{2} {Cl}_{2}

CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
${[Ti {(H_{2} O)}_{6}]}^{3 +}$ is a coloured ion.
Reason :
Ti shows $+ 2, + 3, + 4$ oxidation states.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

The presence of the +3 oxidation state in titanium results in a configuration of $[Ar] 3 d^{1}$ , allowing for d-d transitions. This characteristic gives rise to its capacity to exhibit coloration $Ti$ shows $+ 2, + 3, + 4$ oxidation states but it is not the explanation for assertion. So option (2) is correct.

CHXII08:THE D- & F-BLOCK ELEMENTS

321447 Regarding d- block elements some statements are given below.
(a) Their general electronic configuration is $n s^{0 or 1 or 2} (n - 1) d^{1 - 10}$ .
(b) They form coloured ions.
(c) They forms complex compounds
(d) Their ions are generally paramagnetic.
The correct statements are

1

a, b, d

2 b, c, d

3 a, b, c

4 a, b, c, d