The short answer
Silver shares group 11 with copper, gold and roentgenium. The familiar coinage trio are excellent conductors, but electron scattering, temperature and material structure matter; a shared atomic electron pattern is not a complete conductivity explanation.
A familiar column
Copper, silver and gold occupy group 11 of the periodic table. Their symbols are Cu, Ag and Au, and their atomic numbers are 29, 47 and 79. The Royal Society of Chemistry lists all three in the same vertical column. Their long association with money also explains the familiar collective name coinage metals.
They are not the complete modern group. Roentgenium, element 111, sits below gold. It is an artificially produced, highly radioactive element studied in tiny quantities, not another material available for ordinary wiring or coins. That distinction keeps the historical coinage trio separate from the full periodic-table classification.
An electron pattern is a starting point
The neutral atoms of copper, silver and gold have a filled outer d subshell and one electron in the next s subshell. For silver, the configuration is written [Kr] 4d¹⁰ 5s¹. This resemblance helps explain their chemical family relationship. It is not, by itself, a complete calculation of electrical conductivity.
A piece of metal contains interacting atoms and electronic states spread through a solid. Its resistance depends on how charge carriers move and scatter. Research on silver crystals examines scattering by lattice vibrations, impurities and defects, as well as the effects of crystal boundaries. Temperature and material preparation therefore matter when comparing measurements.
Silver is exceptionally conductive near room temperature, but a ranking needs stated conditions. Pure bulk samples, engineered single crystals, alloys and thin deposited coatings need not give the same comparison. A claim about the element should not silently become a promise about every object containing it.
Different strengths, different jobs
Copper can be drawn into wire and is widely used in wiring and motors. Silver appears in electrical contacts and conducting materials. Gold is useful on electrical connectors because its chemical resistance helps maintain the contact surface. These applications reflect several properties at once, rather than conductivity alone.
The metals do not share identical surface chemistry. Silver can tarnish when sulfur-containing substances react with it; gold is much less reactive in ordinary conditions. Calling the whole family corrosion-proof would conceal a practical difference that matters to both engineers and collectors.
For a collector, group 11 is a useful connection between three familiar metals. It does not establish a coin’s composition, purity or performance. Those questions concern the actual alloy and object, not simply the position of one ingredient in the periodic table.
About this edition
Original source and editorial notes
Adapted from original material by Rich Silver. Original source card: Silver fact: supplied original card (publication date not established).
Reviewed 2026-11-04. Retained the group-11 relationship while adding roentgenium for completeness. Replaced the single-mobile-electron explanation with a qualified account of atomic configurations and solid-state transport. Removed the unconditional top-three ranking and corrosion-proof claim. The source card has no verified publication date or public URL; none has been inferred from file metadata. No source-card graphics are reproduced.