2. Questions Bank
  3. 11th Class
  4. Chemistry
  5. Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति

11th Class Chemistry Classification of Elements and Periodicity in Properties / तत्त्वों का वर्गीकरण एवं गुणों में आवर्ति Question Bank 11th CBSE Chemistry Classification of Elements and Periodicity in Properties

  • question_answer
    Why are there fourteen elements in the lanthanoid series?

    Answer:

                    In the lanthanoid series, the electrons are filled in 4f sub-shell. Since the 4f sub-shell can have a maximum of fourteen electrons, there are fourteen elements in the lanthanoid series.


You need to login to perform this action.
You will be redirected in 3 sec spinner