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Class 11
Chemistry :-NCERT Solution - Classification of elements and periodicity in properties.

Question 7
Which element do you think would have been named by
(i) Lawrence Berkeley Laboratory
(ii) Seaborg’s group?


Answer:

Answer
  1. Lawrencium (Lr) with Z = 103  is an actinide which involves the filling of 5f orbital and Berkelium (Bk) with Z = 97  is an actinide which involves the filling of 5f orbital (both of them are f block elements).
  2. Seaborgium (Sg) with Z = 106 is a d- block element present in 7th period &  6th column of periodic table.

SET

NCERT Chemistry Class 11