Which of the following best explains why the bonds in ammonia (NH3) are polar covalent?
A. Nitrogen has a greater number of isotopes than hydrogen.
B. Nitrogen has a greater electronegativity value than hydrogen.
C. Nitrogen has a mass number that is 14 times that of hydrogen.
D. Nitrogen has seven neutrons, but hydrogen does not have any neutrons.
A?
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I don't like any of the choices but B is the best of those listed. Certainly not A.
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