Multiple Choice
Which of the following best describes the polarity of carbon tetrachloride (CCl_4)?
13. Liquids, Solids & Intermolecular Forces
Molecular Polarity
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Which of the following best describes the polarity of the molecule NH2Cl?
A
NH2Cl is nonpolar because it contains only nonpolar bonds.
B
NH2Cl is polar only in the solid state.
C
NH2Cl is a nonpolar molecule because all the bond dipoles cancel out.
D
NH2Cl is a polar molecule due to its asymmetric shape and difference in electronegativity between atoms.
Verified step by step guidance1
Identify the atoms in the molecule NH2Cl: nitrogen (N), hydrogen (H), and chlorine (Cl).
Determine the electronegativity values of each atom: N, H, and Cl, noting that Cl is more electronegative than N and H.
Analyze the molecular geometry of NH2Cl, which is based on the trigonal pyramidal shape due to the lone pair on nitrogen, causing an asymmetric shape.
Consider the bond dipoles: N-H bonds have a certain dipole moment, and the N-Cl bond has a different dipole moment because of the difference in electronegativity.
Conclude that because of the asymmetric shape and the differences in electronegativity, the bond dipoles do not cancel out, making NH2Cl a polar molecule.
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