Palladium is a lustrous, silvery-white transition metal with the chemical symbol Pd and atomic number 46. It belongs to the platinum group metals (PGMs), which include platinum, rhodium,...
Promethium (symbol Pm, atomic number 61) is a rare, radioactive metal belonging to the lanthanide series of the periodic table. It is the only lanthanide that is entirely...
Polonium is a rare, highly radioactive metalloid with the chemical symbol Po and atomic number 84. It belongs to Group 16 (the chalcogen group) of the periodic table,...
Praseodymium (symbol Pr, atomic number 59) is a soft, silvery, malleable metal that belongs to the lanthanide series of the periodic table. It is one of the rare...
Platinum is a dense, malleable, ductile, and highly unreactive precious metal with the chemical symbol Pt and atomic number 78. Belonging to the transition metals and forming part...
Plutonium is a radioactive, metallic element with the symbol Pu and atomic number 94, belonging to the actinide series of the periodic table. It is one of the...
Radium is a highly radioactive metallic element belonging to the alkaline-earth group, represented by the symbol Ra and atomic number 88. It was discovered in 1898 by Marie...
Rubidium is a soft, silvery-white alkali metal with the chemical symbol Rb and atomic number 37. It is highly reactive, particularly with air and water, and shares many...
Rhenium (symbol Re, atomic number 75) is a dense, silvery-white, high-melting transition metal that occupies a unique position in the periodic table between tungsten and osmium. It is...
Rutherfordium is a synthetic radioactive element with the chemical symbol Rf and atomic number 104, belonging to the transition metals and forming part of the group 4 elements...
Roentgenium is a synthetic chemical element with the symbol Rg and atomic number 111, positioned among the superheavy elements in the periodic table. It belongs to Group 11,...
Rhodium is a rare, silvery-white, and corrosion-resistant metal with the chemical symbol Rh and atomic number 45. Belonging to the platinum group metals (PGMs), it is one of...
