Read question below question: do metals or plastics carry more electrical current? which type of investigation would most likely be conducted to answer the question? a: collective b: experimental c: comparative d: descriptive

metals 
for the investigation i'm not sure, i think either b or c (probably b)

High-energy and unstable.

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