How many atoms are in 3.50 moles of calcium (Ca)? 0 4.00 x 101
O 6.02 x 1023
O 1.40 x 102
0 2.10 x 1024

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