Question

what is the relationship between the period number and the number of main shells

Answer 1

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Explanation:

As an atom's atomic number increases, its shells must accommodate an increasing number of electrons. The outermost shell is called the valence shell; the period number refers to this shell

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Answer 2

The relationship between the period number and the number of main shells

• The number of elements in each period of the periodic table is inversely correlated with the maximum number of electrons each shell can contain, with the maximum number of electrons each shell can hold being equal to the number of elements in the corresponding period.
• When an element's atomic number is known, its period number can be calculated. The period number is indicated by the total number of shells. Because it has four shells, the atom of calcium, which has an atomic number of 20, belongs to the fourth period.
• The number of electrons that can fit in an atom's shells must grow as its atomic number rises. The valence shell, which is the outermost shell, is referred to by the period number.
• In the case of representative elements, the valence electron count is equal to the periodic group number, and the additional electrons required to fit the following noble-gas configuration are equal to 8 minus the group number.

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