Which option correctly describes the pattern of valence electrons on the periodic table?

Question

A. The number of valence electrons increases from top to bottom
B. The number of valence electrons increases from bottom to top
C. The number of valence electrons increases from right to left
D. The number of valence electrons increases from left to right

Answer 1

The correct option that describes the pattern of valence electrons on the periodic table is:

D. The number of valence electrons increases from left to right.

As you move across a period from left to right, each successive element has one more valence electron than the previous element. For example, the elements in Group 1 (alkali metals) have 1 valence electron, while the elements in Group 18 (noble gases) have 8 valence electrons (except for Helium, which has 2).