Draw all possible stereoisomers of 2-bromo-5-isopropylheptane. label the pairs as enantiomers, diastereomers and any meso compounds, if present.

Change in speed or direction : )

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 nitrogen-containing bases

I'm sorry but i'm only grade