Which set of products is most likely to result from the combustion reaction shown below?           c4h8(l)  +  6o2(g)   

The answer would be: carbon dioxide(CO2) and water (H2O).

The combustion of methane gas family typically will result in carbon dioxide and water. It will need many oxygen gases to do the combustion. The reaction equation would be: 

C4H8(l) + 6O2(g)  ==> 4CO2 + 4H2O

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.