Why are the inner transitional metals placed in a separate box?

They are radioactive

To save space; so the periodic table would fit on a single page

All of these

Because they are different from the rest of the elements

What is the rate of 12 liters of water moving through a water hose in 4.0 minutes?

Materials will have different energies associated with the electrons inside them. this is related to how strongly bound they are by their work function. if we sandwich a material with a very low energy between two materials with a high energy, we create a trap for an electron. if this trap is very narrow in one direction in comparison to the others, this is approximately a 1-dimensional box that confines the electron. what is the lowest energy of an electron in the box if the thinnest direction across the materials is 4.81 nm?

Why does some plastic stick to your skin?