Question

Name the four most abundant elements in the entire earth. use their full names instead of their symbols.

Answer 1

Answer: Oxygen, silicon, iron and aluminum

Explanation: Oxygen, which composes about 49.5% of the total mass of the Earth’s crust, waters and atmosphere, according to the textbook “Modern Chemistry.” Silicon is second at 28%. Aluminum is a distant third, at only 8%. Compounds of silicon and oxygen make up 87% of the materials in the Earth’s crust.