Learning Objective:
Predict the type of chemical bond (ionic, polar covalent, non-polar covalent, or metallic) from the electronegativity difference between two elements.
Select Two Elements
Element 1
EN: —
Element 2
EN: —
Na + Cl
H + O
C + O
Fe + Fe
H + H
Prediction Result
ΔEN = —
—
—
Bond Type Rules
Ionic: ΔEN > 1.7 (electron transfer)
Polar Covalent: 0.4 – 1.7 (unequal sharing)
Non-polar Covalent: ΔEN < 0.4 (equal sharing)
Metallic: Metal + Metal (delocalised electrons)
Dot-and-Cross Diagram Preview
Select elements to see diagram