08. THE D- & F-BLOCK ELEMENTS[KARNATAKA CET EXCLUSIVE]
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CHEMISTRY(KCET)

285452 The only lanthanoid which is radioactive

1 promethium
2 praseodymium
3 lanthanum
4 cerium.
Karnataka CET 2022
CHEMISTRY(KCET)

285453 All Cu (II) halides are known, except iodide, the reason for it is that

1 \(\mathrm{Cu}^{2+}\) has much more negative hydration enthalpy
2 \(\mathrm{Cu}^{2+}\) ion has smaller size
3 iodide is bulky ion
4 \(\mathrm{Cu}^{2+}\) oxidises iodide to iodine.
Karnataka CET 2022
CHEMISTRY(KCET)

285454 Which of the following does not represent property stated against it?

1 \(\mathrm{CO}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Mn}^{2+}-\) Ionic size
2 \(\mathrm{Ti}<\mathrm{V}<\mathrm{Mn}-\) Number of oxidation states
3 \(\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}-\) Paramagnetic behaviour
4 \(\mathrm{Sc}>\mathrm{Cr}>\mathrm{Fe}-\) Density
Karnataka CET 2021
CHEMISTRY(KCET)

285455 Which one of the following is correct for all elements from Sc to Cu ?

1 The lowest oxidation state shown by them is +2 .
2 \(4 s\) orbital is completely filled in the ground state.
3 \(3 d\) orbital is not completely filled in the ground state.
4 The ions in +2 oxidation states are paramagnetic.
Karnataka CET 2021
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CHEMISTRY(KCET)

285452 The only lanthanoid which is radioactive

1 promethium
2 praseodymium
3 lanthanum
4 cerium.
Karnataka CET 2022
CHEMISTRY(KCET)

285453 All Cu (II) halides are known, except iodide, the reason for it is that

1 \(\mathrm{Cu}^{2+}\) has much more negative hydration enthalpy
2 \(\mathrm{Cu}^{2+}\) ion has smaller size
3 iodide is bulky ion
4 \(\mathrm{Cu}^{2+}\) oxidises iodide to iodine.
Karnataka CET 2022
CHEMISTRY(KCET)

285454 Which of the following does not represent property stated against it?

1 \(\mathrm{CO}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Mn}^{2+}-\) Ionic size
2 \(\mathrm{Ti}<\mathrm{V}<\mathrm{Mn}-\) Number of oxidation states
3 \(\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}-\) Paramagnetic behaviour
4 \(\mathrm{Sc}>\mathrm{Cr}>\mathrm{Fe}-\) Density
Karnataka CET 2021
CHEMISTRY(KCET)

285455 Which one of the following is correct for all elements from Sc to Cu ?

1 The lowest oxidation state shown by them is +2 .
2 \(4 s\) orbital is completely filled in the ground state.
3 \(3 d\) orbital is not completely filled in the ground state.
4 The ions in +2 oxidation states are paramagnetic.
Karnataka CET 2021
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CHEMISTRY(KCET)

285452 The only lanthanoid which is radioactive

1 promethium
2 praseodymium
3 lanthanum
4 cerium.
Karnataka CET 2022
CHEMISTRY(KCET)

285453 All Cu (II) halides are known, except iodide, the reason for it is that

1 \(\mathrm{Cu}^{2+}\) has much more negative hydration enthalpy
2 \(\mathrm{Cu}^{2+}\) ion has smaller size
3 iodide is bulky ion
4 \(\mathrm{Cu}^{2+}\) oxidises iodide to iodine.
Karnataka CET 2022
CHEMISTRY(KCET)

285454 Which of the following does not represent property stated against it?

1 \(\mathrm{CO}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Mn}^{2+}-\) Ionic size
2 \(\mathrm{Ti}<\mathrm{V}<\mathrm{Mn}-\) Number of oxidation states
3 \(\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}-\) Paramagnetic behaviour
4 \(\mathrm{Sc}>\mathrm{Cr}>\mathrm{Fe}-\) Density
Karnataka CET 2021
CHEMISTRY(KCET)

285455 Which one of the following is correct for all elements from Sc to Cu ?

1 The lowest oxidation state shown by them is +2 .
2 \(4 s\) orbital is completely filled in the ground state.
3 \(3 d\) orbital is not completely filled in the ground state.
4 The ions in +2 oxidation states are paramagnetic.
Karnataka CET 2021
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CHEMISTRY(KCET)

285452 The only lanthanoid which is radioactive

1 promethium
2 praseodymium
3 lanthanum
4 cerium.
Karnataka CET 2022
CHEMISTRY(KCET)

285453 All Cu (II) halides are known, except iodide, the reason for it is that

1 \(\mathrm{Cu}^{2+}\) has much more negative hydration enthalpy
2 \(\mathrm{Cu}^{2+}\) ion has smaller size
3 iodide is bulky ion
4 \(\mathrm{Cu}^{2+}\) oxidises iodide to iodine.
Karnataka CET 2022
CHEMISTRY(KCET)

285454 Which of the following does not represent property stated against it?

1 \(\mathrm{CO}^{2+}<\mathrm{Fe}^{2+}<\mathrm{Mn}^{2+}-\) Ionic size
2 \(\mathrm{Ti}<\mathrm{V}<\mathrm{Mn}-\) Number of oxidation states
3 \(\mathrm{Cr}^{2+}<\mathrm{Mn}^{2+}<\mathrm{Fe}^{2+}-\) Paramagnetic behaviour
4 \(\mathrm{Sc}>\mathrm{Cr}>\mathrm{Fe}-\) Density
Karnataka CET 2021
CHEMISTRY(KCET)

285455 Which one of the following is correct for all elements from Sc to Cu ?

1 The lowest oxidation state shown by them is +2 .
2 \(4 s\) orbital is completely filled in the ground state.
3 \(3 d\) orbital is not completely filled in the ground state.
4 The ions in +2 oxidation states are paramagnetic.
Karnataka CET 2021
NEET DIGITAL LIBRARY