Elements in the same period in the periodic table have th...
Elements in the same period in the periodic table have the same?
number of shells
atomic number
chemical properties
physical properties
Correct answer is A
Elements within the same group have the same number of electrons in their valence (outermost) shells, and they have similar electron configurations. They exhibit similar chemical properties.
But elements in the same period can determined by the same number of shells.
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