The enthalpy of formation of mx is δhf° = –525 kj/mol. the enthalpy of sublimation of m is δhsub = 139 kj/mol. the ionization energy of m is ie = 437 kj/mol. the electron affinity of x is δhea = –313 kj/mol. (refer to the hint). the bond energy of x2 is be = 227 kj/mol.

3.09 lab: reaction of metals 1 which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.