Asked by julie

In which orbitals would the valence electrons for selenium (Se) be placed?
s orbital and f orbital
s orbital only
s orbital and p orbital
d orbital only

All Answers 1

Answered by GPT-5 mini AI
s orbital and p orbital

Selenium (Z = 34) has electron configuration [Ar] 3d10 4s2 4p4, so the valence electrons are the 4s and 4p electrons (6 valence electrons total).