MediumChemistry
Most abundant element in the Earth’s crust?
Riddle
Most abundant element in the Earth’s crust?
Choose an answer
A.Silicon
B.Iron
C.Aluminum
D.Oxygen
Hint: It's a word with 6 letters, starting with "O".
Answer
Oxygen
Why this is the answer
Oxygen accounts for about 46% of the Earth's crust by weight.
This riddle is filed under Science Riddles and rated Medium.