Practice Electronegativity in Chemistry
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
A measure of how strongly an atom attracts the shared electrons in a covalent bond toward itself.
How 'greedy' an atom is for electrons. Fluorine is most greedy.
Example 1
easyArrange the following elements in order of increasing electronegativity: Na, Cl, F, O.
Example 2
mediumIn the molecule HF, the electronegativity of H is 2.1 and F is 4.0. Describe the bond polarity and indicate the direction of the dipole.
Example 3
easyWhich bond is more polar: H–Cl or H–Br? (EN values: H = 2.1, Cl = 3.0, Br = 2.8)
Example 4
mediumWhich bond is more polar, C–H or O–H? Use these electronegativity values: C = 2.5, H = 2.1, O = 3.5.