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QUESTION

# What is the bond polarity of CH3CL?

In order to determine the bond polarity between two atoms, their respective electronegativities must be determined. is the tendency of a bonded atom to attract bonded electrons to itself. The difference in electronegativity, Delta"EN", can help predict the bond type.

In general, a Delta"EN" of < 0.4 indicates a nonpolar bond, while a Delta"EN" of 0.4 - 1.7 indicates a polar covalent bond, and a Delta"EN" > 1.7 indicates an ionic bond. https://www.chem.wisc.edu/deptfiles/genchem/sstutorial/Text7/Tx71/tx71.html

For the C-H bond, the Delta"EN" = "2.55 - 2.20 = 0.35". This is a nonpolar bond because a Delta"EN" of less than 0.4 is indicative of a nonpolar bond.

For the C-Cl bond, the Delta"EN" = "|2.55 - 3.16|" = |0.61|" (Delta"EN" is an absolute value; it is never negative.) The Delta"EN" of 0.61 indicates that the C-Cl bond is polar covalent.