My element is sodium 1. summarize the physical and chemical properties of the element you selected. 2. in the lesson, many models were used to depict the atom. how did these models you understand atomic structure? 3. how do protons, neutrons, and electrons differ in terms of their electrical charges and locations within the atom? 4. describe the four fundamental forces. which of these forces are involved in chemical bonding?answer these questions or at least one.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

there are two significant figures.