For resonance forms of a molecule or ion, a. one always corresponds to the observed structure b. all the resonance structures are seen in various proportions c. the observed structure is an average of the resonance forms d. the same atoms need not be bonded to each other e. there cannot be more than two resonance structures for a given species

Rocks, as they are compressed, begin forming mountains above the earth's surface when two continental plates converge. the continental crust increases in depth as the mountains grow above. the himalayan mountains formed at a convergent plate boundary in this manner. the rocks are smashed together causing them to due to the intense heat and pressure from the colliding plates and eventually forming rock. a) melt; igneous b) layer; sedimentary c) recrystallize; metamorphic d) melt into the earth's interior; metamorphic

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Which of the following nuclei would be the least stable a 2 protons, 2 neutrons b 1 proton 1 neutron c 1 proton 3 neutrons d 1 proton 2 neutrons