Question

Characteristics of the groups and periods in the modern periodic table are because of the ……… of the elements.

Answer 1

Answer:

• Groups:- All Elements in Column have same number of valence electron.
• Periods:- All elements in a row have the same number of electron shells.

• All elements in a group have similar chemical and physical properties because they have the same number of outer electrons. Periods - In periodic table elements are arranged in a series of rows. Elements of the same period have the same number of electron shells.

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Answer 2

Answer:

Characteristics of the groups and periods in the modern periodic table are because of the .. of the elements.