of gold,

🗣 SL提问: of gold

✍️ Ai批改: Gold is a precious metal with unique properties that have made it valuable throughout human history、Here’s an overview of its key characteristics and uses:

Properties of Gold:
Symbol: Au (from Latin *aurum*)
Atomic Number: 79
Density: 19.32 g/cm³ (very dense)
Melting Point: 1,064°C (1,947°F)
Color: Bright yellow, lustrous
Malleability/Ductility: Extremely malleable (can be hammered into thin sheets) and ductile (can be drawn into fine wires)、
Corrosion Resistance: Does not tarnish or react with air/water, making it highly durable、
Conductivity: Excellent conductor of electricity and heat、

Uses of Gold:
1、Jewelry & Decoration (~75% of gold use) – Prized for beauty and workability、
2、Investment – Stored as bars, coins, or ETFs; a hedge against inflation、
3、Electronics – Used in connectors, circuits, and smartphones due to its conductivity、
4、Central Banks – Held as monetary reserves、
5、Medicine/Dentistry – Biocompatible; used in implants and dental alloys、
6、Space Tech – Coats spacecraft components for radiation reflection、

Gold Mining & Production:
Top Producers: China, Australia, Russia, USA, Canada、
Extraction Methods: Hard rock mining, placer mining, or cyanide leaching、
Recycling: Scrap gold (e.g., jewelry, electronics) is a significant source、

Gold Prices:
Priced per troy ounce (31.1 grams) in USD、
Influenced by demand, inflation, geopolitical stability, and currency values、

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