Guanidine is a stronger base than the typical amine. The increased basicity can be explained by drawing the resonance structures of the protonated guanidine. The protonated guanidine (A) has been drawn for you. Draw major resonance structures, one each in boxes B and C, and one minor resonance structure in Box D. Be sure to include the formal charge, lone pairs, and hydrogens on nitrogen for structures B, C, and D.

Guanidine is a stronger base than the typical amine, due to its stability of conjugate acid.

Explanation:

The following resonating structures of guanidine says why guanidine is more stronger base. Because the possible three resonating structures are all equivalent resonating structures.

Basicity of organic base depends on the stability of conjugate acid.

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Answerd. may include all of these are many definitions of bases: the  brønsted-lowry definition of acids and bases says that bases are proton acceptors.the arrhenius definition of acids and bases says that bases increase [oh⁻] in solution (thereby producing oh⁻ ions)the lewis definition of acids and bases says that bases donate electron pairs.therefore, the sensible answer is that a base may include all of the described characteristics.