Notable for reaching very high oxidation states. Osmium tetroxide ( OsO4cap O s cap O sub 4 ) features Os in the +8positive 8 state and is a powerful (though toxic) oxidizing agent. 5. Emerging Applications: Photochemistry and Medicine Cancer Treatment: Cisplatin (
) are central to modern solar energy conversion and light-driven organic synthesis due to their long-lived excited states. Summary Table Key Property Common Use Extreme malleability; Relativistic color Electronics, Jewelry, Nanomedicine Silver (Ag) Highest thermal/electrical conductivity Photography (historically), Antimicrobials Palladium (Pd) Hydrogen "sponge" Hydrogenation, Catalytic converters Platinum (Pt) High melting point; Bio-compatibility Chemotherapy, Fuel cells Rhodium (Rh) Extreme corrosion resistance NOxcap N cap O sub x reduction in vehicles Chemistry of Precious Metals
Gold's characteristic yellow color is a result of a relativistic shift that lowers the energy required for an electron to jump from the orbital, allowing it to absorb blue light. 2. Chemical Inertness and "Nobility" Notable for reaching very high oxidation states
The chemistry of precious metals—primarily the (platinum, palladium, rhodium, ruthenium, iridium, and osmium) along with gold and silver —is defined by their remarkable resistance to corrosion, high density, and unique electronic configurations. Chemical Inertness and "Nobility" The chemistry of precious
They possess high positive reduction potentials (e.g.,
The behavior of precious metals, particularly gold and platinum, is heavily influenced by . As the atomic number ( ) increases, the inner