QuestionJuly 24, 2025

Identify the molecule or molecules containing polar covalent bonds. HF CsF Br_(2) KH N_(2)

Identify the molecule or molecules containing polar covalent bonds. HF CsF Br_(2) KH N_(2)
Identify the molecule or molecules containing polar covalent bonds. HF CsF Br_(2) KH N_(2)

Solution
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Answer

HF Explanation 1. Determine Electronegativity Differences Polar covalent bonds occur when there is a significant difference in electronegativity between bonded atoms, typically between 0.5 and 1.7. 2. Analyze Each Molecule HF: Hydrogen and fluorine have a large electronegativity difference, forming polar covalent bonds. CsF: Cesium and fluorine form an ionic bond due to a very high electronegativity difference. Br_{2}: Bromine atoms have no electronegativity difference, forming nonpolar covalent bonds. KH: Potassium and hydrogen form an ionic bond due to a very high electronegativity difference. N_{2}: Nitrogen atoms have no electronegativity difference, forming nonpolar covalent bonds.

Explanation

1. Determine Electronegativity Differences<br /> Polar covalent bonds occur when there is a significant difference in electronegativity between bonded atoms, typically between 0.5 and 1.7.<br /><br />2. Analyze Each Molecule<br /> HF: Hydrogen and fluorine have a large electronegativity difference, forming polar covalent bonds.<br /> CsF: Cesium and fluorine form an ionic bond due to a very high electronegativity difference.<br /> $Br_{2}$: Bromine atoms have no electronegativity difference, forming nonpolar covalent bonds.<br /> KH: Potassium and hydrogen form an ionic bond due to a very high electronegativity difference.<br /> $N_{2}$: Nitrogen atoms have no electronegativity difference, forming nonpolar covalent bonds.
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