Which of the following questions is correct about the periodic table?
- The non-metallic properties of the elements tend to decrease across each period
-
The valence electrons of the elements increase progressively across the period
- Elements in the same group have the same numbeer of electron shells
- Elements in the same period have the number of valence electrons
The correct answer is: B
Explanation
No official explanation is available for this question at this time. Please check contributions posted by others below. If you can provide an explanation to help other student learn, pleaseThere is an explanation video available .