Question

Which of the following would not have the same number of valence electrons as the others?



boron

aluminum

gallium

selenium

Answer 1

Selenium has 6 valence electrons while Boron, Aluminum, and Gallium all have 3 valence electrons.

Answer 2

"Selenium" is the one among the following choices given in the question that would not have the same number of valence electrons as the others. The correct option among all the options that are given in the question is the fourth option or the last option. Selenium actually has 6 valence electrons, while the others have 3.