CBSE Class 10 Answered
Which period of modern periodic table is told to be incomplete and why
Asked by saradamahapatra9999 | 18 Feb, 2019, 11:24: AM
Expert Answer
The seventh period of the periodic table was considered incomplete.
Because most of the elements from group seven are identified in labs and their properties have not been studied properly.
Also, these elements are unstable and very less information is available of these elements
Answered by Varsha | 18 Feb, 2019, 12:10: PM
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