How many naturally ocouring elements are found on the earth in significant quantities?

Answer 1

There are 92 naturally occurring elements found on Earth, of which about 80 are present in significant quantities. The most abundant elements include oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium, which make up the majority of the Earth's crust. Elements beyond uranium (atomic number 92) are typically synthetic and not found in significant natural quantities.