What are 5 most abundant elements in the Earth's crust

Explanation:

ElementAbundance percent by weightAbundance parts per million by weight

Oxygen46.1%461,000

Silicon28.2%282,000

Aluminum8.23%82,300

Iron5.63%56,300

catya that's not even a b or c

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.