Question 6.15: Using electronegativity values, classify the bond between ea...
Using electronegativity values, classify the bond between each of the following pairs of atoms as nonpolar covalent, polar covalent, or ionic and label any polar covalent bond with δ^{+} and δ^{-} and show the direction of the dipole:
a. K and O b. As and Cl
c. N and N d. P and Br
| ANALYZE THE PROBLEM | Given | Need | Connect |
| pairs of atoms | type of bond | electronegativity values |
For each pair of atoms, we obtain the electronegativity values and calculate the difference in electronegativity.
| Atoms | Electronegativity Difference | Type of Bond | Dipole |
| a. K and O | 3.5 – 0.8 = 2.7 | Ionic | |
| b. As and Cl | 3.0 – 2.0 = 1.0 | Polar covalent | \underset{\longleftrightarrow }{As^{\delta ^{+}} — Cl^{\delta ^{-}}} |
| c. N and N | 3.0 – 3.0 = 0.0 | Nonpolar covalent | |
| d. P and Br | 2.8 – 2.1 = 0.7 | Polar covalent | \underset{\longleftrightarrow }{P^{\delta ^{+}} — Br^{\delta ^{-}}} |
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