Determine the average atomic mass for IODINE. The composition is 80% of I-127, 17% of I-126, and 3% of I-128. Round your response for this problem to 4 significant figures. *

The correct answer is a

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   

Answer it is also known as the completion state is untrue of the activation complex;

The answer you are looking for is option d