Which of the following figures represents Mendeléev's Periodic Table that was published in a German journal in 1872?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. c.
Mendeléev's Periodic Table, published in 1872, is represented by a tabular arrangement where elements are organized based on increasing atomic weights and similar chemical properties in vertical columns, which Mendeléev referred to as "groups." He left gaps in the table for elements that were not yet discovered, predicting their properties based on the periodic trends.