What scientist determined that atomic mass did not determine the pattern of the periodic table? a. james watson b. henry moseley c. rosalind franklin d. dmitri mendeleev

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

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

How do you lengthen a pattern piece? (family and consumer science, sewing)