What type of plot can be used to determine λmax of a solution?

Ithink is a because if say increased in electronegativity

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   

We can't until we know what we are working with or on

27. =3,500,000 x 4,000 = 14,000,000,000