Structure
Not a diagram of dots on rings — a Monte-Carlo sample of the actual probability density |ψ|² for each occupied subshell. Drag to rotate. Blue and violet mark opposite signs of the wavefunction, which is what makes bonding possible.
Measured values
Every bar shows where silver sits among all 118 elements for that property.
Sources: IUPAC 2021 standard atomic weights · CRC Handbook of Chemistry and Physics · NIST. Values marked ~ are predicted rather than measured.
Size, to scale
Radius 144 pm — that is 0.144 nm, so about 3472 million of them side by side would span a millimetre.
Thermal range
Silver is liquid over a 1200 K window, from 1235 K to 2435 K.
The story
Silver is the original antimicrobial superhero - killing bacteria and viruses for over 4,000 years. This brilliant white metal has been humanitys best friend since ancient times, prized not just for its beauty but for its literally life-saving properties. Ancient civilizations didnt know about germs, but they knew that water stored in silver containers stayed fresh longer and wounds treated with silver healed faster. Today we know why: silver ions are like tiny terminators that destroy harmful microorganisms on contact. Silver is a leading conductor - it has the highest electrical and thermal conductivity of any element. Its like the Flash of the periodic table, allowing electricity and heat to race through it faster than any other metal. This makes it essential for everything from solar panels to smartphones. In fact, every electronic device you own contains silver. The photography industry was built on silver halides, compounds that darken when exposed to light. Even though digital cameras have largely replaced film, silver is still used in high-end mirrors and optical equipment. Silver nanoparticles are revolutionizing medicine, being incorporated into bandages, medical devices, and even socks to prevent infections.
Silver's discovery is lost in the mists of prehistory, as this lustrous metal has been treasured by human civilizations for over 6,000 years. Unlike many elements that required modern chemistry to isolate, silver's beauty and utility were immediately apparent to our ancestors.
The earliest evidence of silver working dates to around 4000 BCE in Anatolia (modern Turkey). Ancient civilizations discovered that heating silver-bearing lead ores in furnaces with air flow would separate the metals - a process called cupellation. This technique allowed them to extract pure silver from naturally occurring argentiferous galena.
The Kingdom of Lydia (modern Turkey) minted the world's first silver coins around 700 BCE, revolutionizing commerce. These early coins were made from electrum, a natural gold-silver alloy found in river deposits. The Athenian "owl" silver coins became the first international currency, financing the golden age of Greece.
The discovery of massive silver deposits at Potosí in Bolivia (1545) and Zacatecas in Mexico transformed the global economy. Spanish conquistadors forced indigenous people to work these mines under brutal conditions. The famous phrase "worth a Potosí" (meaning immensely valuable) originated from this mountain that produced 60% of the world's silver for 300 years.
Swedish chemist Jöns Jacob Berzelius gave silver its modern chemical symbol "Ag" (from Latin "argentum") in 1814. He was among the first to study silver's chemical properties systematically. The development of photography by Louis Daguerre (1839) created new demand for silver compounds, particularly silver iodide and silver bromide.
The Comstock Lode discovery in Nevada (1859) triggered the last great American silver rush. Mining engineer Adolph Sutro built a 4-mile tunnel to drain the mines, one of the greatest engineering feats of the 19th century. This discovery helped finance the American Civil War and built fortunes for families like the Hearsts and Mackays.
The 20th century revealed silver's unique properties: highest electrical and thermal conductivity of all elements, powerful antimicrobial effects, and photosensitive compounds. These discoveries led to applications in electronics, medicine, and renewable energy that ancient civilizations could never have imagined, ensuring silver's continued importance in our technological age.
Silver's impact extends far beyond economics into language, culture, and art. Terms like "silver-tongued," "silver screen," and "silver bullet" reflect its perceived value and purity. In many cultures, silver is associated with the moon, femininity, and protection against evil - beliefs that influenced everything from werewolf legends to traditional jewelry designs.
Applications
Silver has been the cornerstone of jewelry making for over 6,000 years. Sterling silver (92.5% silver, 7.5% copper) remains the global standard for fine jewelry, tableware, and decorative objects. The metal's lustrous appearance and workability make it perfect for intricate designs, from ancient Celtic torcs to modern minimalist pieces.
Silver's exceptional electrical conductivity (highest of all elements) makes it central in electronics. It's used in high-end audio cables, computer keyboards, cell phone components, and RFID chips. Silver nanoparticles are revolutionizing flexible electronics and printed circuits for wearable technology.
Silver halides (AgCl, AgBr, AgI) are the foundation of traditional photography. These light-sensitive compounds undergo chemical changes when exposed to light, creating the photographic image. Though digital photography dominates, silver-based films remain essential for specialized applications and artistic photography.
Silver's antimicrobial properties have been known since ancient times. Modern medicine uses silver-coated medical devices, wound dressings, and surgical instruments. Silver nanoparticles are being researched for drug delivery systems and cancer treatment. Silver sulfadiazine cream is a standard treatment for burn wounds.
Silver paste is crucial in solar panel manufacturing, forming the conductive grid that collects electrons generated by photovoltaic cells. Each solar panel contains about 15-20 grams of silver. As solar energy expands globally, this application represents one of the fastest-growing uses of silver.
Silver creates the most reflective mirrors, reflecting 95% of visible light. High-quality telescopes, microscopes, and precision optical instruments rely on silver-coated mirrors. Silver's reflective properties are also used in energy-efficient windows and architectural glass.
Silver has served as currency for millennia and remains a popular investment metal. Silver coins and bars are traded globally as stores of value. Many countries still mint silver commemorative coins, and silver's monetary role continues in modern precious metals markets.
Silver catalysts are essential in producing formaldehyde, ethylene oxide, and other industrial chemicals. The automotive industry uses silver in catalytic converters for diesel engines. Silver's catalytic properties also enable the production of plastics and synthetic materials.
Sterling silver cutlery, serving pieces, and tea sets remain symbols of elegance and quality. Silver's antimicrobial properties naturally inhibit bacterial growth, making it hygienic for food service. Many families pass down silver heirlooms through generations.
Silver jewelry is accessible luxury - more affordable than gold but equally beautiful. From engagement rings to fashion jewelry, silver's versatility allows for endless design possibilities. Many people choose silver for its cool tone and modern aesthetic.
Your smartphone likely contains silver in its circuit boards, connectors, and conductive pathways. Silver ensures reliable electrical connections in everything from headphones to gaming consoles. Its use in electronics touches our daily lives constantly.
Silver-infused clothing, socks, and athletic wear prevent odor-causing bacteria. Silver nanoparticles in washing machines and water purification systems provide continuous antimicrobial protection. Some bandages and first-aid products contain silver for infection prevention.
Silver amalgam fillings have been used in dentistry for over 150 years. While less common today, silver's durability and antimicrobial properties made it a reliable choice for tooth restoration. Some modern dental materials still incorporate silver nanoparticles.
Modern vehicles contain silver in electrical systems, window defrosters, and navigation systems. Silver-coated contacts ensure reliable operation of critical safety systems. Electric vehicles use even more silver due to their complex electrical systems.
Silver is found in decorative items, picture frames, candlesticks, and luxury home accessories. Silver-plated items offer the beauty of silver at lower cost. Many households unknowingly use silver in appliances and electronic devices daily.
Where it comes from
0.075 mg/kg of Earth's crust · more abundant than 41% of elements
Silver occurs naturally in Earth's crust at an average concentration of 0.08 parts per million, making it about 20 times rarer than gold by weight. This precious metal forms through fascinating geological processes that concentrate it into mineable deposits worldwide.
Native silver (pure metallic silver) forms in hydrothermal veins where hot, mineral-rich water circulates through rock fractures. Famous native silver deposits include Kongsberg, Norway, and the Keweenaw Peninsula in Michigan. These deposits often feature spectacular dendritic (tree-like) silver crystals that are prized by mineral collectors.
Most silver occurs in mineral compounds rather than pure metal. Key silver minerals include argentite (Ag₂S), proustite (Ag₃AsS₃), and pyrargyrite (Ag₃SbS₃). Electrum, a natural alloy of gold and silver containing 20-70% silver, was historically important and is still found in many gold deposits.
Approximately 70% of silver production comes as a by-product of mining other metals, particularly lead, zinc, and copper. Silver often substitutes for these metals in sulfide ore minerals. Major silver-producing regions include Mexico (world's largest producer), Peru, China, and Russia.
The famous Comstock Lode in Nevada produced over 8.5 million ounces of silver between 1859-1898. Mexico's Cerro Rico mountain in Potosí was so rich in silver that it supplied much of the world's silver for 300 years. Today, the Cannington mine in Australia produces about 1,300 tons of silver annually.
Seawater contains approximately 0.1-2 parts per billion of silver, representing a vast but uneconomical resource. Silver accumulates in certain marine organisms, particularly in the shells of some mollusks. Deep-sea mining may eventually access silver-rich polymetallic nodules on ocean floors.
Silver is relatively abundant in meteorites, particularly iron meteorites which can contain up to 100 times more silver than terrestrial rocks. The element forms through stellar nucleosynthesis in massive stars and is dispersed during supernova explosions, eventually incorporating into planetary systems like our own.
Handling
Silver is considered one of the safest metals for human contact and use. It has been used in medical applications, food service, and jewelry for thousands of years without significant health concerns for most people.
Safe for normal use: Sterling silver jewelry and tableware are safe for direct skin contact. Some people may experience allergic reactions to copper or nickel alloys in silver-plated items, but pure silver rarely causes skin irritation.
Rare condition: Prolonged exposure to silver compounds can cause argyria - a permanent blue-gray discoloration of skin. This occurs mainly from consuming colloidal silver supplements or industrial exposure to silver dust. The condition is cosmetic and not life-threatening.
Industrial precautions: Workers handling silver dust or compounds should use appropriate ventilation and protective equipment. The OSHA exposure limit is 0.01 mg/m³ for silver metal and soluble compounds in workplace air.
Reactive compounds: Silver nitrate is corrosive and can cause burns. Silver dust may be combustible. Always handle silver chemicals with appropriate safety equipment and in well-ventilated areas.
Low environmental toxicity: Silver's antimicrobial properties can affect aquatic microorganisms at high concentrations. Proper disposal and recycling of silver-containing products prevents environmental accumulation.
Quick answers
Silver has numerous applications:
Jewelry and Decorative Items: Most commonly used in rings, necklaces, and ornamental objects
Electronics: Excellent conductor used in circuits, switches, and solar panels
Photography: Silver compounds in traditional film photography
Medicine: Antimicrobial properties in bandages and medical devices
Currency: Historically used as money and still in investment coins
Silver tarnishes due to a chemical reaction with sulfur compounds in the air:
Process: Silver reacts with hydrogen sulfide (H₂S) to form silver sulfide (Ag₂S)
Appearance: Creates a dark layer on the surface
Prevention: Store in airtight containers, use anti-tarnish strips
Cleaning: Can be removed with silver polish or baking soda paste
Silver has the highest electrical conductivity of all elements because:
Free electrons: Single valence electron moves easily through the metal lattice
Crystal structure: Face-centered cubic arrangement allows efficient electron flow
Low resistance: 1.59 × 10⁻⁸ Ω·m at 20°C
Applications: Used in high-end electronics, solar panels, and electrical contacts despite high cost
Silver metal is generally non-toxic to humans in its pure form. However:
Silver compounds can be toxic if ingested in large quantities
Argyria: Chronic exposure to silver compounds can cause skin to turn blue-gray
Safe handling: Pure silver jewelry and utensils are completely safe for everyday use
Antimicrobial: Silver's toxicity to bacteria makes it useful in medical applications
Silver (symbol Ag) is element 47 on the periodic table, a transition metal in period 5, group 11. The best electrical and thermal conductor of any element, and an antimicrobial known since antiquity. At room temperature it is a solid.
[Kr] 4d¹⁰ 5s¹, giving 5 occupied shells holding 2, 8, 18, 18, 1 electrons respectively.Silver melts at 1234.9 K (961.8 °C) and boils at 2435 K (2161.9 °C).
The standard atomic weight of Silver is 107.868 u. That is a weighted average across its naturally occurring isotopes, which is why it is rarely a whole number.
Silver has a density of 10.501 g/cm³. Water is 1.0 g/cm³, so a block of silver is about 10.5× heavier.
Silver has a Pauling electronegativity of 1.93. The scale runs from 0.70 (francium, the least greedy for electrons) to 3.98 (fluorine, the most). Values in this middle band tend to form covalent rather than strongly ionic bonds.