Which of the following contains a polar covalent bond?A.NaClB.O2C.Na(s)D.NOSUBMITarrow_backPREVIOUS
Question
Which of the following contains a polar covalent bond?
A. NaCl
B. O2
C. Na(s)
D. NO
Solution
The answer is D. NO.
Here's why:
A. NaCl is an ionic compound, not covalent. The bond in NaCl is formed by the transfer of an electron from sodium to chlorine, not by sharing of electrons.
B. O2 is a nonpolar covalent compound. The two oxygen atoms share their electrons equally.
C. Na(s) is a metal, not a compound, so it doesn't have any covalent bonds.
D. NO (Nitric Oxide) is a polar covalent compound. The oxygen atom is more electronegative than the nitrogen atom, so the shared electrons are more likely to be found near the oxygen atom, making the bond polar.
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