Following is a structural formula for guanidine, the compound by which migratorybirds excrete excess metabolic nitrogen. The hydrochloride salt of this compound isa white crystalline powder, freely soluble in water and ethanol.(a) Write a Lewis structure for guanidine showing all valence electrons.(b) Does proton transfer to guanidine occur preferentially to one of its !NH2groups (cation A) or to its "NH group (cation B)? Explain.
October 4, 2016 Tuesday, October 4, 2016 3:50 PM Metal Cations positively charged ions resulting from the metal atom losing one or more electrons Variable Ionic Charge: Typically transition metals. Fixed Ionic Charge: Typically “group A” or Representative elements. Nonmetal Anions negatively charged ions resulting from the nonmetal atom gaining one or more electrons Metal Cations poThe charge varies based electron configuration of the d-block lelementse or more electrons elements Mg N3 2 CuBr 2 PbS 2 The charge is fixed based on ionic electron configuration
