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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 single carbon atom can form a maximum of four covalent bonds. The number of covalent bonds that an atom can form is limited by its number of valence electrons. Carbon has four valence electrons, and it can use each of these four electrons for bonding. Continue Reading.