2. Chlorine free radicals are produced in the upper atmosphere when ultraviolet radiation interacts

with chlorofluorocarbons (CFCs). The free radicals catalyze the conversion of ozone to oxygen. How is

this catalysis harmful to humans?

Idk the answer sorry

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   

Answerhund's rule;