Which statement is incorrect among the following?

  • A
    Lanthanoid hydroxides are less basic in nature as compared to actinoid hydroxides.
  • B
    Lanthanoids form oxocations.
  • C
    In lanthanoids,only promethium is radioactive.
  • D
    Actinoids form oxocations.

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Similar Questions

The number of incomplete orbitals in inner transition elements is

Consider the following statements:
$I$. $La(OH)_3$ is the least basic among hydroxides of lanthanides.
$II$. $Zr^{4+}$ and $Hf^{4+}$ possess almost the same ionic radii.
$III$. $Ce^{4+}$ can act as an oxidizing agent.
Which of the above is/are true?

The incorrect statement among the following is:

Which of the following elements shows the greatest similarity to the lanthanoids?

The lanthanoid that would show color is

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