Write a balanced chemical equation based on the following description:
the reaction of gaseous C5H4 with oxygen gas produces gaseous carbon
dioxide and water vapor

Ithink 2 is the correct

Ch4 and ph3 are both covalent since they are composed both of non-metals.    ch4 is non- polar because of  london forces and has a geometry of tetrahedral  ph3 , on the other hand, is umbrella shaped polar and has dipole-dipole intermolecular force (imf) . since ph3 is polar, it has a stronger imf   

Ineed with this also i hope you understand it