Q29 of 181 Page 283

How does the electronic configuration of the atom of an element relate to its position in the modern periodic table ?

In the modern periodic table, the elements having same electronic configuration are placed in a group i.e have same number of valence electrons in their last shell.


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Which group of elements was missing from Mendeleev’s original periodic table ?

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State modern periodic law.

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How could the modern periodic law remove various anomalies of Mendeleev’s periodic table? Explain with examples.

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Name the scientist who prepared modern periodic table.