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An element is a pure chemical substance composed entirely of atoms of a single type, pure. Each atom in an element is defined by its atomic number, which represents the number of proton in its nucleus. This atomic number distinguishes one element from another; in other words, each element has a unique atomic number. For example, all atoms with six protons are carbon (C), while those with eight protons are oxygen (O).Elements are the fundamental building building blocks of all matter in the unive

Dubnium is a synthetic and highly radioactive element located at position 105 in the periodic table. Its discovery sparked a competition between research groups in Russia and the United States during the late 1960s and early 1970s. It derives its name from the research center in Dubna, Russia, which played a key role in its discovery. To date, only a few atoms of this element have been produced, and its properties are largely based on theoretical calculations.Classification and Fundamental Prope

Lanthanum is a soft, silvery-white metal with atomic number 57 located in the 6th period of the periodic table. It was discovered in 1839 by Swedish chemist Carl Gustaf Mosander. Lanthanum is the element that gives its name to the lanthanide series and is known for its reactive nature and various technological applications.Classification and Basic PropertiesLanthanum (La) is an element in the 6th period and group 3 of the periodic table. It is considered the starting point of the lanthanide seri

Thallium is a soft, silvery-white post-transition metal located at the 81st position in the periodic table. It was discovered in 1861 by William Crookes using spectroscopic methods. Named after the bright green line observed in its spectrum during discovery, thallium is particularly known for its extreme toxicity, which results in highly restricted use and strict regulatory control.Classification and Basic PropertiesThallium (Tl) is an element in the 6th period and 13th group (boron group) of th

Gold (Au) is the 79th element in the periodic table. This element, which exists in solid form at room temperature, is one of the rare metals commonly found in nature in its native state. Gold, used in industrial, electronic, medical, and financial applications, has been known and worked by humans since prehistoric times.Classification and Fundamental PropertiesGold (Au) is a transition metal located in the 6th period and 11th group of the periodic table. It belongs to the same group as copper an

Amasya Beji Marble is a natural stone extracted in the Amasya province of Türkiye, possessing high physical, chemical, and aesthetic properties. It was officially registered as a “Geographical Indication” by the Turkish Patent and Trademark Office on 11 June 2018 and is protected under Law No. 6769 on Industrial Property.Product Description and Distinctive FeaturesAmasya Beji Marble is produced from limestone layers belonging to the Jurassic–Cretaceous-aged Dogdu Formation. Its fresh surface app

Gold is a precious metal with the symbol Au and atomic number 79. It is immediately recognizable by its yellow and shiny appearance. It occurs both in nature in its pure form and combined with other minerals. It is a soft and malleable metal that conducts electricity and heat well.HistoryGold has been known to humanity for thousands of years. In ancient civilizations it was used as a symbol of wealth and power. Coins jewelry crowns and decorative objects were made from gold. It has maintained it