Question

the diagrams show part of the periodic table of the elements. the shaded areas represent a general trend in the number of valence electrons in the elements. the lighter shading indicates fewer valence electrons and the darker shading indicates more valence electrons. which diagram best shows the relationship between the elements and the number of valence electrons?
a
b
c
d

Explanation:

In the periodic table, the number of valence - electrons increases from left to right across a period. The lighter shading indicates fewer valence electrons and darker shading indicates more valence electrons. So, the shading should get darker from left to right.

Answer:

A. Option Text