General characteristics of the transition elements
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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 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
2 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
3 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
4 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
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 \(\mathrm{\mathrm{Ag}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{CuF}_{2}}\)
3 \(\mathrm{\mathrm{ZnF}_{2}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{Cl}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
\(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) 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.
CHXII08:THE D- & F-BLOCK ELEMENTS

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

1 \(\mathrm{a, b, d}\)
2 b, c, d
3 a, b, c
4 a, b, c, d
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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 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
2 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
3 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
4 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
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 \(\mathrm{\mathrm{Ag}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{CuF}_{2}}\)
3 \(\mathrm{\mathrm{ZnF}_{2}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{Cl}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
\(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) 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.
CHXII08:THE D- & F-BLOCK ELEMENTS

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

1 \(\mathrm{a, b, d}\)
2 b, c, d
3 a, b, c
4 a, b, c, d
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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 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
2 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
3 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
4 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
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 \(\mathrm{\mathrm{Ag}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{CuF}_{2}}\)
3 \(\mathrm{\mathrm{ZnF}_{2}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{Cl}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
\(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) 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.
CHXII08:THE D- & F-BLOCK ELEMENTS

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

1 \(\mathrm{a, b, d}\)
2 b, c, d
3 a, b, c
4 a, b, c, d
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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 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
2 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
3 \(\mathrm{\mathrm{Co}^{3+}}\) and \(\mathrm{\mathrm{Cr}^{3+}}\)
4 \(\mathrm{\mathrm{Cr}^{3+}}\) and \(\mathrm{\mathrm{Co}^{3+}}\)
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 \(\mathrm{\mathrm{Ag}_{2} \mathrm{SO}_{4}}\)
2 \(\mathrm{\mathrm{CuF}_{2}}\)
3 \(\mathrm{\mathrm{ZnF}_{2}}\)
4 \(\mathrm{\mathrm{Cu}_{2} \mathrm{Cl}_{2}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321446 Assertion :
\(\left[\mathrm{Ti}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{3+}\) 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.
CHXII08:THE D- & F-BLOCK ELEMENTS

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

1 \(\mathrm{a, b, d}\)
2 b, c, d
3 a, b, c
4 a, b, c, d
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