Metals are elements that conduct heat and electricity well, are typically shiny and malleable, and form positive ions. Articles here explore the properties, structure, and everyday uses of metals.
Magnetism is a physical phenomenon that happens when materials exert attractive or repulsive forces on other materials. Electron spins and the motion of electric charges cause these forces. Magnetism is the broad category for all types of magnetic behavior. Ferromagnetism is one of those types. A ferromagnetic material attracts strongly to magnets. You can magnetize…
Unlike hydrogen gas, a metal (e.g., iron, copper, tungsten) when heated does not display discrete lines in the electromagnetic spectrum. Instead, a hot metal displays a continuous spectrum of colors, a rainbow, which begs the question: Why does a hot metal display a rainbow? Delocalized Electrons of a Metal Have Energy Bands In a pure…
What is the sea of electrons in a metal? In a metal, the outermost electrons (aka valence electrons) leave their parent atoms and move freely throughout the solid. These electrons delocalize. Scientists picture them as a “sea of electrons” (or “an electron cloud”) surrounding a three-dimensional lattice of positive metal ions. This arrangement accounts for…