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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.
Other types of bonding can occur, such as covalent bonding (as seen in the formation of molecular oxygen) or ionic bonding (as seen in the formation of salt or sodium chloride[NaCl]). Hydrogen bonding can break up the electrical attraction of atoms of solids and dissolves them.