Question

Describe Mendeleev’s periodic table briefly in terms of rows and columns and their raw being.

Answer 1

Answer:

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Answer 2

Explanation:

the Russian scientist Dmitri Mendeleev develop the preriodic table of elements during the period 1869 to 1872 A.D . Mendeleev's periodic table is the most important step in clasifiyof elements. Mendeleev considered the fundamental property of elements, namely , the attic mass , as standard and arranged 63 elements known at that time in an increasing order of their atomic masses . then he transformed this into the periodic table of elements in accordance with the physical and chemical properties of these elements. properties of elements are periodic function of their atomic masses

the vertical columns in the Mendeleev's periodic table are called groups while the horizontal rows are called period