What type of volcano forms when there is a series of violent and gentle eruptions resulting in layering of lava and ash? cinder composite cone volcano shield volcano hot smoker volcano

The answer is Shield Volcano.

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