9.2 × 10⁻⁵ = (2x)2 / (0.84-x) = 4x2 / 0.84 4x2 = (9.2x10-5)(0.84) x =

the answer is minerals.

i don't know people like to fight everywhere rip.

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.