Question

The most abundant metal in the earth's crust is ___.

• A. Aluminium
• B. Iron
• C. Platinum
• D. Copper

Answer 1

The correct option is A

Aluminium

The most abundant metal in the earth crust is aluminium. Although aluminium is the most abundant metal in the earth's crust, it is never found free in nature. All of the earth's aluminium has combined with other elements to form compounds. Two of the most common compounds are the alum, such as potassium aluminium sulphate ($KAl(S{O}_4{)}_2\cdot 12H_{2}O$) and aluminium oxide ($A{l}_2{O}_3$). About 8.2% of the earth's crust is composed of aluminium.