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Which element tend to form a covalent bond? If the electronegativity difference between two atoms is less than 1.7, then they form covalent bond. Generally when non metal reacts with another non metal, then a covalent â¦bond is formed between these two atoms. 2 people found this useful.
A pair of oxygen atoms can form an O2 molecule in which each atom has a total of eight valence electrons by sharing two pairs of electrons. The term covalent bond is used to describe the bonds in compounds that result from the sharing of one or more pairs of electrons. How Sharing of Electrons Bonds Atoms.