Approximately 100 elements occur in nature. How many of them are widespread in making the minerals and rocks of the crust?
A) all of them
B) three quarters of them
C) half of them
D) a quarter of them
E) none of them

Question

Quizplus · Accepted Answer

Only about a quarter of the naturally occurring elements are widespread in making the minerals and rocks of the Earth's crust, with the most common being oxygen, silicon, aluminum, iron, calcium, sodium, potassium, and magnesium.

Approximately 100 Elements Occur in Nature