Which of the following statements is not true of using electron dot diagrams?

A. The element's group number provides a clue about the number of valence electrons. B. An element with eight valence electrons is chemically unstable.
C. Dots should be placed one at a time on each side of the chemical symbol.
D. An atom is chemically stable if all dots are paired.

1 answer

B. An element with eight valence electrons is chemically unstable.

It would be unstable only with one to seven valence electrons, not eight.