in the periodic table below, shade all the elements for which the neutral atom has a valence electron configuration of , where stands for an integer.

If you are told to get 100 ml of stock solution to use to prepare smaller size sample for an experiment, which piece of glassware would you use?

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

Are the results of a thoroughly tested hypothesis?