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The actinoids exhibit more number of oxi...

The actinoids exhibit more number of oxidation states in general than the lanthanoids. This is because

A

the 5f orbitals are more buried than the 4f orbitals

B

there is similarity between 4f and 5f orbitals in their angular part of the wave function

C

the actinoids are more reactive than the lanthanoids

D

the 5f orbitals extend further from the nucleus than the 4f orbitals

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • The actinoids exhibit, more member of oxidation states in general than the lanthanoids. This is because

    A
    the actinides are more reactive than the lanthanides
    B
    the `5f`-orbits are more buried than the `4f`-orbits
    C
    there is a similarity between `4f`and `5f`-orbits in their angular part of the wave function.
    D
    the `5f`-orbits extend farther from the nucleus than the `4f`-orbitals.

  • The pair that can exhibit more stable +4 oxidation state is

    A
    Fe, Ni
    B
    Ag, Au
    C
    Pt, Pd
    D
    Cd, Hg

  • Which statements among the following are correct? I. Ce^(+4) is an oxidizing agent & colourless. II. Lu^(3+) is colourless. III. Actinoids exhibit a higher number of oxidation states than lanthanoids. IV. All 3d elements give H_(2) with 1 M HCl.

    A
    II, III
    B
    I, III
    C
    I, II, III
    D
    I, IV

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