Which statement is most accurate?
a. the greater the physical density of a material, the lower the refractive index. b. the greater the optical density of the material, the lower the refractive index. c. the greater the physical density of a material, the higher the refractive index. d. the more optically dense the material, the higher the refractive index. save

it is the most commonly accepted one

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.