Amalgam (chemistry) but can be worked with under dry nitrogen. The Hg-Hg distance is around 300 picometres, Hg-K around 358 pm. Phases KHg and KHg are also known; rubidium, strontium and barium undecamercurides are known and isostructural. Sodium amalgam (NaHg) has a different structure, with the mercury atoms forming hexagonal layers, and the sodium atoms a linear chain which fits into the holes in the hexagonal layers, but the potassium atom is too large for this structure to work in KHg. Sodium amalgam is produced as a byproduct of the chloralkali process and used as an important reducing agent in organic and
Alchemy and chemistry in medieval Islam of alchemical texts: Theatrum Chemicum, and commented upon by Pseudo Aquinas in Aurora Consurgens. They both also give his (modified) image of the sage holding a chemical table (see image above). Al-Tughrai was an 11th–12th century Persian physician. whose work the"Masabih al-hikma wa-mafatih al-rahma" (The Lanterns of Wisdom and the Keys of Mercy) is one of the earliest works of material sciences. Al-Jildaki who was a Persian alchemist urged in his book the need for experimental chemistry and mentioned many experiments "Kanz al-ikhtisas fi ma'rifat al-khawas by Abu 'l-Qasim Aydamir al-Jildaki". Jābir analyzed each Aristotelian element in terms of Aristotle's