Electronegativity Exploration
A Grade 12 Chemistry worksheet exploring the concept of electronegativity, its trends, and applications in chemical bonding.
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Electronegativity Exploration
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Read each question carefully and provide concise answers based on your understanding of electronegativity and periodic trends. Use complete sentences where appropriate.
1. Define electronegativity in your own words. How does it differ from electron affinity?
2. Which of the following elements has the highest electronegativity?
Sodium (Na)
Chlorine (Cl)
Oxygen (O)
Fluorine (F)
3. Explain the trend of electronegativity across a period and down a group in the periodic table. What factors contribute to these trends?
4. When two atoms with a large difference in electronegativity bond, they form a(n) bond. If the electronegativity difference is small, a(n) covalent bond is formed. If there is no difference, it is a(n) covalent bond.
5. A molecule with polar bonds can be nonpolar overall if its molecular geometry causes the bond dipoles to cancel out.
True
False
6. Consider the bonds in H₂O, NaCl, and CH₄. Classify each bond as nonpolar covalent, polar covalent, or ionic based on typical electronegativity differences. (You do not need to provide exact values, just the classification.)