What is Zinc?
Zinc (chemical symbol Zn) is a chemical element that belongs to Group 12 of the periodic table. After iron, aluminum, and copper, it is the most commonly used metal in the world and has important industrial and biological applications. Zinc is critically important for plants and animals, and many bodily functions in humans depend on […]
What is Lead?
Zeiss Makro-Planar T*2/100mm ZE Lead is one of the elements in the periodic table of Mendeleev, abbreviated as Pb. Its atomic number is 82. Lead is one of the oldest metals discovered in archaeology, with the oldest pieces dating back to 3500 BC found in Egypt, which are housed in the British Museum. Lead is […]
What is Copper?
