What is the most abundant metal in Earth's crust?

The most abundant metal in Earth's crust is aluminum. This metal makes up about 8.1% of the Earth's solid surface by weight, which is more than any other metal. Aluminum's abundance is largely due to its presence in various minerals and ores, such as bauxite, which is the primary source of aluminum for commercial extraction. The high reactivity of aluminum means it rarely occurs in its pure form and is typically found combined with other elements in minerals.

Iron is also a significant metal in the Earth's crust and constitutes a large portion of the planet's core, but its concentration in the crust is lower than that of aluminum. Copper and gold are much less abundant in comparison to aluminum and iron, making them relatively rare in the Earth's crust. This distinction in abundance is crucial for understanding geology, mining, and industrial applications, as the availability of metals influences their economic and practical usage.