An element has $2$ electrons in its fourth shell. State:
(d) position in the periodic table

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Solution

The number of shells present in an atom determines its period and the number of valence electrons determines the group.
Since the element has $2$ electrons in its fourth shell which defines that it has $4$ shells and $2$ valence electrons.
Therefore, the element is placed in period $4$ and group $2$ .

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An element has 2 electrons in its fourth shell. State: (d) position in the periodic table

The number of shells present in an atom determines its period and the number of valence electrons determines the group. Since the element has 2 electrons in its fourth shell which defines that it has 4 shells and 2 valence electrons. Therefore, the element is placed in period 4 and group 2.

An element has $2$ electrons in its fourth shell. State:
(d) position in the periodic table