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NTA Abhyas JEE Main2020Chemistryd and f Block ElementsPractice

Which statement is incorrect with reference to inner transition elements?

Options

  1. AThe oxides of lanthanoids are basic
  2. BPm is radioactive element among actinoids
  3. CThe values of ionization enthalpy of actinoids are less than the values of ionization enthalpy of lanthanoids
  4. DOnly in the electronic configuration of lanthanoids like Ce,Gd, Lu the electrons are filled in 5d orbitals

Correct answer

B. Pm is radioactive element among actinoids

Step-by-step solution

Pm is not actinoids, its a lanthanide

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