19. The element neon (Ne), which is used in signs, differs from both fluorine (F) and sodium (Na) by one proton each. Sodium, an alkali metal, and fluorine, a halogen, are both
extremely reactive. In contrast, neon, which is a noble gas, is highly unreactive. Use the
information contained on a periodic table to explain the difference in their chemical
properties.

The diagrams to the right show the distribution and arrangement of gas particles in two different containers. according to kinetic-molecular theory, which of the following statements is true? check all that apply. if the temperatures of both containers are equal, container a has greater pressure than container b. if the volume of container a decreased, its pressure would decrease. if the pressure in both containers is equal, container a has a lower temperature than container b.