Question

All the elements in the same group of the modern periodic table have the same number of valence electrons.

• A. True
• B. False

Answer 1

The correct option is A True

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> All the elements of the same group in a periodic table have the same number of valence electrons. Whereas all the elements of the same period have the same number of shells.

For example, group-2 elements - Be, Mg, Ca, Sr, Ba and Ra have 2 electrons in their outermost shell i.e., the number of valence electrons is same.