Which statement is true about the polarity of HCN, which has a structure of H-C≡N:?
(Hint: The electronegativities of H, C, and N are 2.1, 2.5, and 3.0, respectively.)
a. The carbon-nitrogen bond in HCN is a polar-covalent bond
b. Both bonds in HCN are nonpolar covalent bonds
c. The total molecular dipole moment in HCN points towards the H atom
d. Statements a and c are correct
e. Statements b and c are correct
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