Question

write the features of mendeleeve periodic ​

Answer 1

Answer:

Mendeleev arranged the elements in horizontal rows (known as periods) in the increasing order of their atomic masses. Each vertical column (called groups) contained elements of similar properties. The main features of Mendeleev's periodic table are: Groups and sub-groups: There are eight groups (I to VIII).

Answer 2

Answer:

please see the above attachment

Explanation:

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