Question

In Mendeleev's periodic table, the ascending order of atomic weight of
elements is not followed by​

Answer 1

Answer:

In Mendeleev's periodic table, the ascending order of atomic weight of

elements is not followed by modern periodic law

Answer 2

Answer:

In Mendeleev's periodic table some pair of elements do not follow increasing order of atomic weight known as anomalous pair. The correct example of anomalous pair is. Atomic weight of Pa=231.

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