which element is least likely to form chemical bonds?\no phosphorus (p)\no helium (he)\no sodium (na)\no…

Brief Explanations:

Helium is a noble gas with a full outer - electron shell (2 electrons in its first shell). Noble gases are chemically inert and have little tendency to gain, lose, or share electrons to form chemical bonds. Phosphorus has 5 valence electrons and can form various bonds, sodium has 1 valence electron and is highly reactive to lose it, and carbon has 4 valence electrons and can form multiple covalent bonds.

Answer:

helium (He)