The lanthanoids
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CHXII08:THE D- & F-BLOCK ELEMENTS

321713 Which of the following ion has maximum complex forming tendency?

1 \(\mathrm{\mathrm{La}^{+3}}\)
2 \(\mathrm{C e^{+3}}\)
3 \(\mathrm{\mathrm{Eu}^{+3}}\)
4 \(\mathrm{\mathrm{Lu}^{+3}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321714 Assertion :
Europium (II) is more stable than ceriurn (II).
Reason :
Cerium salts are used as a catalyst in petroleurn cracking.

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

321715 Match the column I with column II and mark the appropriate choice
Column I
Column II
A
Lanthanie hard as steel
P
Lu
B
Lanthanide with maximum paramagnetic character in \(\rm{L{n^{4 + }}}\) state
Q
Tb
C
Lanthanide with maximum value of \(\rm{{E^0}}\) for the reaction \(\rm{L{n^{3 + }}\left( {aq} \right) + 3{e^ - } \to Ln\left( s \right)}\)
R
Sm
D
Lanthanide whose \(\rm{L{n^{3 + }}}\) ion is diamagnetic in nature
S
Eu

1 A - R, B - S, C - P, D - Q
2 A - R, B - Q, C - S, D - P
3 A - S, B - R, C - Q, D - P
4 A - R, B - S, C - Q, D - P
CHXII08:THE D- & F-BLOCK ELEMENTS

321716 Gadolinium has a low value of third ionisation enthalpy because of

1 high exchange enthalpy
2 high electronegativity
3 high basic character
4 small size
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CHXII08:THE D- & F-BLOCK ELEMENTS

321713 Which of the following ion has maximum complex forming tendency?

1 \(\mathrm{\mathrm{La}^{+3}}\)
2 \(\mathrm{C e^{+3}}\)
3 \(\mathrm{\mathrm{Eu}^{+3}}\)
4 \(\mathrm{\mathrm{Lu}^{+3}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321714 Assertion :
Europium (II) is more stable than ceriurn (II).
Reason :
Cerium salts are used as a catalyst in petroleurn cracking.

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

321715 Match the column I with column II and mark the appropriate choice
Column I
Column II
A
Lanthanie hard as steel
P
Lu
B
Lanthanide with maximum paramagnetic character in \(\rm{L{n^{4 + }}}\) state
Q
Tb
C
Lanthanide with maximum value of \(\rm{{E^0}}\) for the reaction \(\rm{L{n^{3 + }}\left( {aq} \right) + 3{e^ - } \to Ln\left( s \right)}\)
R
Sm
D
Lanthanide whose \(\rm{L{n^{3 + }}}\) ion is diamagnetic in nature
S
Eu

1 A - R, B - S, C - P, D - Q
2 A - R, B - Q, C - S, D - P
3 A - S, B - R, C - Q, D - P
4 A - R, B - S, C - Q, D - P
CHXII08:THE D- & F-BLOCK ELEMENTS

321716 Gadolinium has a low value of third ionisation enthalpy because of

1 high exchange enthalpy
2 high electronegativity
3 high basic character
4 small size
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CHXII08:THE D- & F-BLOCK ELEMENTS

321713 Which of the following ion has maximum complex forming tendency?

1 \(\mathrm{\mathrm{La}^{+3}}\)
2 \(\mathrm{C e^{+3}}\)
3 \(\mathrm{\mathrm{Eu}^{+3}}\)
4 \(\mathrm{\mathrm{Lu}^{+3}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321714 Assertion :
Europium (II) is more stable than ceriurn (II).
Reason :
Cerium salts are used as a catalyst in petroleurn cracking.

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

321715 Match the column I with column II and mark the appropriate choice
Column I
Column II
A
Lanthanie hard as steel
P
Lu
B
Lanthanide with maximum paramagnetic character in \(\rm{L{n^{4 + }}}\) state
Q
Tb
C
Lanthanide with maximum value of \(\rm{{E^0}}\) for the reaction \(\rm{L{n^{3 + }}\left( {aq} \right) + 3{e^ - } \to Ln\left( s \right)}\)
R
Sm
D
Lanthanide whose \(\rm{L{n^{3 + }}}\) ion is diamagnetic in nature
S
Eu

1 A - R, B - S, C - P, D - Q
2 A - R, B - Q, C - S, D - P
3 A - S, B - R, C - Q, D - P
4 A - R, B - S, C - Q, D - P
CHXII08:THE D- & F-BLOCK ELEMENTS

321716 Gadolinium has a low value of third ionisation enthalpy because of

1 high exchange enthalpy
2 high electronegativity
3 high basic character
4 small size
NEET - 2022
Join With Us for More Updates
CHXII08:THE D- & F-BLOCK ELEMENTS

321713 Which of the following ion has maximum complex forming tendency?

1 \(\mathrm{\mathrm{La}^{+3}}\)
2 \(\mathrm{C e^{+3}}\)
3 \(\mathrm{\mathrm{Eu}^{+3}}\)
4 \(\mathrm{\mathrm{Lu}^{+3}}\)
CHXII08:THE D- & F-BLOCK ELEMENTS

321714 Assertion :
Europium (II) is more stable than ceriurn (II).
Reason :
Cerium salts are used as a catalyst in petroleurn cracking.

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

321715 Match the column I with column II and mark the appropriate choice
Column I
Column II
A
Lanthanie hard as steel
P
Lu
B
Lanthanide with maximum paramagnetic character in \(\rm{L{n^{4 + }}}\) state
Q
Tb
C
Lanthanide with maximum value of \(\rm{{E^0}}\) for the reaction \(\rm{L{n^{3 + }}\left( {aq} \right) + 3{e^ - } \to Ln\left( s \right)}\)
R
Sm
D
Lanthanide whose \(\rm{L{n^{3 + }}}\) ion is diamagnetic in nature
S
Eu

1 A - R, B - S, C - P, D - Q
2 A - R, B - Q, C - S, D - P
3 A - S, B - R, C - Q, D - P
4 A - R, B - S, C - Q, D - P
CHXII08:THE D- & F-BLOCK ELEMENTS

321716 Gadolinium has a low value of third ionisation enthalpy because of

1 high exchange enthalpy
2 high electronegativity
3 high basic character
4 small size
NEET - 2022
For More Updates join with Us