HirG Posted August 12, 2019 Report Share Posted August 12, 2019 For the following question: Which molecules react to form a dative/coordinate bond? A. CH4 and NH3 B. C2H2 and Cl2 C. NH3 and HF D. Cl2 and HF The answer scheme says C is correct, but I do not see how two already complete molecules can form coordinate bonds. NH3 has a lone pair of electrons, HF having none. How can a coordinate bond between this lone pair and HF happen? I am confused. The others are also equally confusing. Reply Link to post Share on other sites More sharing options...
kw0573 Posted August 13, 2019 Report Share Posted August 13, 2019 The question asks in the product of each reaction, which has a dative coordinate bond? As far as I know, A does not react. You'll learn about B in organic chemistry. C is acid-base. D does not happen (F is above Cl). In NH4F, the fourth H is bonded to the lone pair of N, so that specific N-H bond is a dative coordinate bond. I won't explain why B isn't but you'll learn about it in organic. 1 Reply Link to post Share on other sites More sharing options...
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