Answer me good and with very good explanations! if you do i will give brainliest!
when two opposite electrical forces are near each other what will happen?

They will attract to each other. Electrons have negative charge so the are attractive to protons(positive charge)

When two opposite electrical forces such as positive and negative or positive/negative and neutral, they will attract. They will attract because the electrical forces are opposites so for example, if the positive electrical charge comes near a negative electrical charge they will attract because its like they're saying "we have different charges! lets attract and give each other some of our charge and become equal!" lol.

Hope this helped! :)
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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