In which of the following situstions would convection currents occur
within a block of iron that has been placed in a freezer
within the water in the lake as ice forms ontop
within a spoon that has been placed into warm soup
within a plastic box from which all the air has been removed

Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a.it confirmed that elements should be arranged in strict order of increasing atomic mass. b.it led to elements with similar atomic numbers being grouped together. c.it allowed the elements to be placed in strict order of increasing atomic number. d.it showed that the way mendeleev grouped elements together was completely wrong.