What is the ph of a 0.025 m [oh−] solution?
a. 0.94
b. 1.60
c. 9.60
d. 12.40

Compound with sulfer  is bright red 

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