For the following reaction, 3.54 grams of nitrogen gas are mixed with excess hydrogen gas. The reaction yields 4.02 grams of ammonia nitrogen(g) + hydrogen(g) – — ammonia(g)
grams
What is the theoretical yield of ammonia ?
What is the percent yield for this reaction ?
%

The metal is named first

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   

The answer is accuracy