Many elements can form double bonds, but some of the most common ones include:
Carbon (C)
Oxygen (O)
Nitrogen (N)
Sulfur (S)
Selenium (Se)
Tellurium (Te)
Phosphorus (P)
Silicon (Si)
Germanium (Ge)
Tin (Sn)
These elements can form double bonds with other atoms of the same element, or with different elements. Double bonds occur when two atoms share two pairs of electrons.