Lessons

Eamcet Chemistry
Unit - 3 Periodic Classification - Periodic Classification of Elements

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Q.

The following are some statements about Mendeleeff’s periodic table.
i) It is based on increasing order of atomic numbers.
ii) Mendeleef corrected the atomic weight of some elements like Be, In,U ..etc
iii) (Ar ; Ca ), (Co; Cu), (Te; F2) are three inverted pairs
iv) It is based on increasing order of atomic weights

View Answer

Correct choice: B

Explanation:

none
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