Using the laws of conservation of energy and momentum, show that the ratio of the final velocities in terms of m1 and m2 is given by:

Neither model is able to show the reactivity of potassium.

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   

If this is a true or galse then its true but if not then what is the question?

H tricky one let me think and get back to u