Question

Each atom of an element x has four shells. it belongs to which period in the periodic table
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Answer 1

Answer:

➡An element `X` belongs to 3rd period and group 2 of the periodic table.....

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Answer 2

An element `X` belongs to 3rd period and group 2 of the periodic table.

On the modern Periodic Table, what is the group number and period number of element X? 90. Fluorine is a Group 17 element. Fluorine is the most electronegative and reactive of all elements.