Answer: double covalent bond
Explanation:
Ionic bonds are formed by transfer of electrons between metal and non metals.
Covalent bonds are defined as the bonds which are formed by the sharing of electrons between the atoms forming a compound. This bond is usually formed between two non-metals.
As sulfur molecule is formed by combination of two atoms of sulfur which is a non metal, thus form a covalent bond.
These can be single as well as multiple bonds depending on the number of electrons. Single bond is formed by the sharing of two electrons and multiple bonds are formed by the sharing of more than two electrons.
