Yes, metals can react with other metals to form alloys or intermetallic compounds. Alloys are homogeneous mixtures of two or more metals, while intermetallic compounds are chemically bonded compounds that contain two or more metals. The properties of alloys and intermetallic compounds can be very different from those of the pure metals that compose them. For example, alloys are often stronger and harder than pure metals, while intermetallic compounds can have unique magnetic or electrical properties.

The reactivity of metals with other metals depends on a number of factors, including the electronegativity of the metals, their atomic radii, and their crystal structures. Electronegativity is a measure of the ability of an atom to attract electrons. Metals with high electronegativities, such as gold and silver, are less reactive than metals with low electronegativities, such as sodium and potassium. Atomic radius is a measure of the size of an atom. Metals with large atomic radii, such as cesium and rubidium, are more reactive than metals with small atomic radii, such as beryllium and magnesium. Crystal structure is the arrangement of atoms in a solid. Metals with close-packed crystal structures, such as face-centered cubic (fcc) and hexagonal close-packed (hcp), are more reactive than metals with open-packed crystal structures, such as body-centered cubic (bcc).