<p><strong>Noun</strong></p><ul><li>A rare metallic element of the platinum group, silver-white, ductile and malleable, harder and fusing more readily than platinum: used chiefly as a catalyst and in dental and other alloys.</li><li>Symbol: Pd</li><li>Atomic weight: 106.4</li><li>Atomic number: 46</li><li>Density: 12 at 20°C</li></ul><p><strong>End of Response</strong></p>