16. ELECTRONS ALWAYS FILL THE LOWEST ENERGY LEVEL AVAILABLE FIRST WHAT ARE THE ELECTRONS IN THE OUTER MOST ENERGY LEVEL CALLED?

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Which substance can be broken down by chemical means

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him