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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.
In this unit, students will learn about various types of chemical bonds. Students will: 1  compare ionic and covalent bonding. 2  explain how atoms combine when forming ionic bonds and covalent bonds. 3  classify bonds as polar covalent, non-polar covalent, or ionic. 4  predict the polarity of a molecule based on illustrations.