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Question
Which among the following is not an anomalous pair in Mendeleev's periodic table?
Which among the following is not an anomalous pair in Mendeleev's periodic table?
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Solution
The correct option is C Sc, Ga
In certain pair of elements, the increasing order of atomic masses was not obeyed.
In these, Mendeleev placed elements according to similarities in their properties and not in increasing order of their atomic masses.
The last pair is not anomalous pair.
Option D is correct.
In certain pair of elements, the increasing order of atomic masses was not obeyed.
In these, Mendeleev placed elements according to similarities in their properties and not in increasing order of their atomic masses.
The last pair is not anomalous pair.
Option D is correct.
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