Write electron configurations and Lewis structures for each element. Indicate which of the electrons in the electron configuration are shown in the Lewis structure.
Chapter 4 of “Introductory Chemistry” by Zumdahl and Decoste, 7 /8 edition Law of Constant Composition: a given compound always has the same composition, regardless of where it comes from Ex: carbon dioxide is always 2.7g of oxygen per 1g of carbon Dalton’s Atomic Theory 1. “Elements are made of tiny particles called atoms” 2. “All atoms of a given element are identical” *Later corrected by Dalton to (#2): “All atoms of the same element contain the same number of protons and electrons, but atoms of a given element may have different numbers of neutrons” 3. “The atoms of a given element are different from those of any other element” 4. “Atoms of one element can combine with atoms of other elements to form compounds.