Question

Which three elements account for more than 80?

1) H, O, Si
2) H, Si, O
3) O, H, Si
4) O, Si, H

Answer 1

Oxygen, silicon, and hydrogen are the three elements that account for more than 80% of the earth's crust.

Step-by-step explanation:

The correct answer is O, Si, H. Oxygen (O), silicon (Si), and hydrogen (H) are the three elements that account for more than 80% of the earth's crust.

Oxygen is the most abundant element in the earth's crust, making up about 46.1% of its mass. Silicon is the second most abundant element, accounting for approximately 28.2% of the crust's mass. Hydrogen, although the most abundant element in the universe, only makes up 0.14% of the earth's crust.