Neodymium (Nd), atomic number 60, is a lanthanide essential to powerful NdFeB magnets, lasers and specialty glass. Learn its properties, compounds and isotopes....

Praseodymium (Pr), atomic number 59, is a soft lanthanide used in magnets, aircraft alloys, glass and ceramics. Learn its properties, compounds and isotopes....

Cerium (Ce), atomic number 58, is the most abundant lanthanide and is used in catalysts, glass polishing, alloys and lighting. Learn its properties and isotopes....

Lanthanum (La), atomic number 57, is a soft rare-earth metal used in optical glass, catalysts, batteries and alloys. Learn its properties, compounds and isotopes....

Xenon (Xe), atomic number 54, is a rare noble gas used in lighting, spacecraft ion propulsion, medicine and semiconductor processing. Learn its properties and isotopes....

Iodine (I), atomic number 53, is a halogen essential for thyroid hormones and used in medicine, disinfectants and imaging. Learn its properties and isotopes....

Tellurium (Te), atomic number 52, is a rare metalloid used in solar cells, thermoelectrics, alloys and semiconductors. Learn its properties, compounds and isotopes....

Antimony (Sb), atomic number 51, is a brittle metalloid used in flame-retardant systems, alloys and semiconductors. Learn its properties, compounds and safety....

Tin (Sn), atomic number 50, is a soft corrosion-resistant metal used in coatings, solder, bronze and glass production. Learn its allotropes, properties and isotopes....

Indium (In), atomic number 49, is a soft metal used in transparent conductive coatings, semiconductors and low-melting alloys. Learn its properties and isotopes....

Cadmium (Cd), atomic number 48, is a toxic transition metal used in batteries, coatings, pigments and nuclear control systems. Learn its properties and safety....

Silver (Ag), atomic number 47, is a highly conductive precious metal used in jewellery, electronics, mirrors and antimicrobial materials. Learn its properties....

Palladium (Pd), atomic number 46, is a rare platinum-group metal used in catalytic converters, electronics, jewellery and chemical catalysts. Learn its properties....

Ruthenium (Ru), atomic number 44, is a rare platinum-group metal used in catalysts, electronics and wear-resistant alloys. Learn its properties and isotopes....

Technetium (Tc), atomic number 43, is a radioactive transition metal whose isotope Tc-99m is central to nuclear medicine. Learn its properties, uses and isotopes....

Molybdenum (Mo), atomic number 42, is a high-melting transition metal used in strong steels, lubricants and catalysts. Learn its properties, uses and isotopes....

Niobium (Nb), atomic number 41, is a corrosion-resistant transition metal used in strong steels and superconducting magnets. Learn its properties and isotopes....

Zirconium (Zr), atomic number 40, is a corrosion-resistant transition metal important in nuclear reactors, ceramics and chemical equipment. Learn its properties....