# Which element is most likely to form three covalent bonds: P, C, S, Si, Se?

Which element is most likely to have a $+ I I I$ or $- I I I$ oxidation state?
$P C {l}_{3}$, $P {H}_{3}$, $P {\left(C {H}_{3}\right)}_{3}$............All of these are real compounds that we can use in the laboratory. The formulation of the alkyls, halides, and hydrides is a little bit different for carbon, sulfur, silicon, and selenium........And so your choice is clear.........