The corrosion product of which metal consists of white, powdery, snow-like mounds?

The corrosion product of magnesium is characterized by white, powdery, snow-like mounds, also known as "white corrosion." This occurs when magnesium undergoes corrosion, especially in environments where moisture is present. Magnesium oxide and hydroxide are the primary corrosion products, and they tend to flake off in the form of a fine white powder.

In particular, this type of corrosion is often seen in applications where magnesium is exposed to the elements, such as in aircraft components or automotive parts. The powdery appearance is distinctive and can easily be identified, allowing for proper maintenance and remediation efforts.

In contrast, aluminum produces a white, powdery oxide layer as well, but it typically adheres well to the base metal, forming a protective barrier. Steel rusts to a reddish-brown substance, primarily iron oxide, while zinc corrosion typically manifests as a white, crystalline residue called zinc oxide. However, it does not have the same fluffy or mound-like appearance associated with magnesium corrosion. Thus, the distinctive characteristics of magnesium corrosion products affirm that it is the answer to this question.