How many resonance structures does #"NH"_4^(+)# have? Organic Chemistry Resonance Finding Resonance Structures 1 Answer Truong-Son N. Dec 2, 2015 None. Ammonium has no #pi# bonds at all, and so it cannot have any resonance. Its pKa is about #9.4#. The pKa of ammonia is about #36#. Answer link Related questions What are the rules for drawing resonance structures? When are resonance structures more stable? Why is it important to describe the resonance structures in molecules such as ozone, #O_3#, and... When drawing resonance structures, it is permissible to alter the way atoms are connected? Does the nitrate ion have one long #N¬O# bond and two short #N¬O# bonds? Does “resonance” refer to the idea that molecules are resonating rapidly between different... Does the cyanide ion only have one dominant resonance structure? Why? How can I draw two equivalent resonance structures for the formate ion, #HCO_2^-#? What is the significance of the dashed bonds in this ball-and-stick model? Why is the #C_6H_8# molecule different from benzene with respect to resonance? See all questions in Finding Resonance Structures Impact of this question 13735 views around the world You can reuse this answer Creative Commons License