The bohrs bury scheme says that 2n^2 where n is the energy level is used to find the electrons on a shell but it also says that the maximum number of electrons on the outermost shell is 8

Iron (3) oxide will decompose in the presence of hydrogen gas and heater to produced iron and digydrogen monoxide white a balanced chemical equation

How can the periodic table be used to predict the behavior of elements?

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.