When Mendeleyev changed the layout, there were gaps where no known element fit.
How did the gaps help scientists look for
undiscovered elements? Those are the answers in the picture:)

If 200.0g of copper(ll) sulfate react with an excess of zinc metal, what is the theoretical yield of copper

Five students had to answer the question how are elements arranged in a periodic tabledamon: i think the elements are arranged by increasing massflo: i think the elements are arranged according to their properties sienna: i think the elements are arranged by when their discovers kyle: i think the elements are arranged according to how common they areglenda: i don't agree with any of themwho is right

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.