Question

There a elements that make up 98.5% of the earths crust 46.6%, oxygen 8.1% aluminum, 5.0% iron, 3.6% calcium, 2.8% sodium, 2.6% potassium, and 2.1% and magnesium. The rest is silicon what percentage of the earths crust is silicon?

Answer 1

27.7% of the earths crust is silicon

Step-by-step explanation:

An element is a pure substance that cannot be divided into simpler substances by physical or chemical means.

The usual sufficient element in the Earth's crust is oxygen, delivering up 46.6% of Earth's mass. Silicon is the next abundant plentiful element (27.7%), next is aluminum (8.1%), iron (5.0%), calcium (3.6%), sodium (2.8%), potassium (2.6%). and magnesium (2.1%). These eight elements estimate around 98.5% of the total mass of the Earth's crust.

When you add all the percentages of the given elements,70.8 % is the value.

So, 98.5 - 70.8 = 27.7%