Name the elements present in the second, Third, and Fourth periods of the second group.

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Solution

Periodic table: A periodic table is an arrangement of elements in the increasing order of their atomic numbers in a tabular format.
Elements present in the second period and second group: Beryllium $(Be)$
Elements present in the Third period and second group: Magnesium $(Mg)$
Elements present in the fourth period and second group: Calcium $(Ca)$

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