Multiple choice

Which of the following statements is incorrect?

  1. Larger number of oxidation states is exhibited by actinides than those by lanthanides.

  2. 4f and 5f orbitals are equally shielded.

  3. There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu.

  4. Lanthanum has partially filled d orbitals and no other partially filled orbital.

  5. Lutetium is the densest lanthanide.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

4f orbital electrons are shielded more than 5f orbital electrons.

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