In general, metals are shiny, reflecting most of the light that strikes them. They are malleable and ductile (that is, they will bend under pressure and are not brittle). They have a broad range of melting temperatures (e.g., mercury is a liquid at room temperature, gallium will melt i...
Semiconductor materials include – Silicon,antimony, arsenic, boron, carbon, germanium, gallium arsenide, selenium, silicon carbide, sulfur, tellurium, oxides of most metals. What is Superconductor? Superconductor is an element, inter-metallic alloy, or a compound that conducts electricity without resist...
Silicon (Si).The most widely used semiconductor material, silicon is favored for its excellent semiconducting properties, abundance, and the stability of its oxide layer, which is essential for making MOSFETs (metal-oxide-semiconductor field-effect transistors). Germanium (Ge).Germanium has higher ele...
Silicon is the material of choice in the semiconductor industry because it is widely abundant and relatively inexpensive. The conductive properties of silicon can be enhanced by doping with materials such as phosphorus or boron. Alongside silicon, germanium and gallium arsenide are alternative semiconduct...
Common semiconductor compounds include gallium arsenide, indium antimonide and the oxides of most metals. We also widely use gallium arsenide (GaAs) in low-noise, high-gain, weak-signal amplifying devices. A semiconductor device can perform the function of the original vacuum tube, but with hundred...
Name the four common halogens and tell the normal phase of each. Which one is the most reactive of all elements? What is an ionic bond? What type of substance form ionic bond? Classify each element as an alkali metal, alkaline earth metal halogen, or noble gas. A) F B) Sr C) K ...
What kinds of attractions present in NaCl(s) must be overcome to form NaCl(aq)?Question:What kinds of attractions present in NaCl(s) must be overcome to form NaCl(aq)?Force of Attraction:Every compound, whether it is ionic or covalent, is made up of some kind of forc...
Known as magnetoactive phase transitional matter (MPTM), the novel material, made up of magnetic particles embedded in liquid metal, can liquefy and coalesce back together — sort of like the villain in Terminator 2.These miniature machines can move quickly, jump, climb walls and split into ...
The melting gallium under it would soak into the aluminum, disrupting its structure and causing it to become as soft and weak as wet paper. The burning sulfur would spill into thebromine. Bromine is liquid at roomtemperature, a property it shares with only one other element-mercury. It's ...
the major story in these commodities has been about the tech industry’s need for rare earth elements. Some, like dysprosium, erbium, europium, gadolinium, and holmium, are used in speakers, electric vehicle motors, and smartphones. Another element, gallium, is frequently...