Which of the following statement is correct about the periodic table?
- Elements in the same period have the same number of valency electron
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The valence electron of the elements in the same period increase progressively across the period
- Elements in the same group have the same number of electron shells
- The non-metallic properties of the elements tend to decrease across each period
The correct answer is: B
Explanation
The valence electron of the elements in the same period increase progressively across the period due to an increase in atomic number
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