The outermost electrons of the element vanadium (atomic#23) are in which energy level of the atom ?

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.

What does an electron configuration for an atom relate to the atoms placement on the periodic table

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion