wikiHow Calculating Electronegativity Practice Answers 1. Electronegativity difference between sodium (Na) and chlorine (Cl): 2.1 - 0.9 = 1.2 2. Electronegativity difference between carbon (C) and hydrogen (H): 2.5 - 2.1 = 0.4 3. Electronegativity difference between oxygen (O) and fluorine (F): 3.5 - 4.0 = -0.5 4. Electronegativity difference between nitrogen (N) and oxygen (O): 3.0 - 3.5 = -0.5 5. Electronegativity difference between sulfur (S) and chlorine (Cl): 2.5 - 3.0 = -0.5 6. Electronegativity difference between phosphorus (P) and hydrogen (H): 2.1 - 2.1 = 0 7. Electronegativity difference between potassium (K) and bromine (Br): 0.8 - 2.8 = -2.0 8. Electronegativity difference between carbon (C) and oxygen (O): 2.5 - 3.5 = -1.0 9. Electronegativity difference between nitrogen (N) and chlorine (Cl): 3.0 - 3.0 = 0 10. Electronegativity difference between fluorine (F) and oxygen (O): 4.0 - 3.5 = 0.5 11. Electronegativity difference between lithium (Li) and fluorine (F): 1.0 - 4.0 = -3.0 12. Electronegativity difference between hydrogen (H) and sulfur (S): 2.1 - 2.5 = -0.4 13. Electronegativity difference between magnesium (Mg) and oxygen (O): 1.2 - 3.5 = -2.3 14. Electronegativity difference between nitrogen (N) and fluorine (F): 3.0 - 4.0 = -1.0 15. Electronegativity difference between carbon (C) and chlorine (Cl): 2.5 - 3.0 = -0.5 16. Electronegativity difference between potassium (K) and oxygen (O): 0.8 - 3.5 = -2.7 17. Electronegativity difference between phosphorus (P) and fluorine (F): 2.1 - 4.0 = -1.9 18. Electronegativity difference between hydrogen (H) and oxygen (O): 2.1 - 3.5 = -1.4 19. Electronegativity difference between lithium (Li) and iodine (I): 1.0 - 2.5 = -1.5 20. Electronegativity difference between nitrogen (N) and hydrogen (H): 3.0 - 2.1 = 0.9 Please note that negative values indicate a polar covalent bond, while positive values indicate an ionic or highly polar covalent bond. Page