Question

What is meant by 'group' in the modern periodic table? How do the following change on moving from top to bottom in a group?; (i) Number of valence electrons; (ii) Number of occupied shells; (iii) Size of atoms; (iv) Metallic character of elements; (v) Effective nuclear change experienced by valence electrons(All India - 2014)

Answer 1

Explanation:

a group is the column of elements of the periodic table

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