What is the most common element on Earth, accounting for 36% of its mass?
On earth, oxygen is the most common element, making up about 47% of the earth’s mass. Silicon is second, making up 28%, followed by aluminum (8%), iron (5%), magnesium (2%), calcium (4%), sodium (3%), and potassium (3%). All of the remaining elements together make up less than 1% of the earth’s mass. http://antoine.frostburg.edu/chem/senese/101/periodic/faq/what-element-is-most-abundant.
