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In organic chemistry, allenes are organic compounds in which one carbon atom has double bonds with each of its two adjacent carbon atoms (R 2 C=C=CR 2, where R is H or some organyl group). [1] Allenes are classified as cumulated dienes. The parent compound of this class is propadiene (H 2 C=C=CH 2), which is itself also called allene.
Hugh Allen Oliver Hill FRSC FRS [3] (23 May 1937 – 30 July 2021), usually known as Allen Hill, was Professor, and later Emeritus Professor, of Bioinorganic Chemistry at the University of Oxford and Honorary Fellow of The Queen's College, Oxford, and Wadham College, Oxford. [4]
CIGS is a I-III-VI 2 compound semiconductor material composed of copper, indium, gallium, and selenium.The material is a solid solution of copper indium selenide (often abbreviated "CIS") and copper gallium selenide, with a chemical formula of CuIn x Ga (1−x) Se 2, where the value of x can vary from 1 (pure copper indium selenide) to 0 (pure copper gallium selenide).
Quantum chemistry, also called molecular quantum mechanics, is a branch of physical chemistry focused on the application of quantum mechanics to chemical systems, particularly towards the quantum-mechanical calculation of electronic contributions to physical and chemical properties of molecules, materials, and solutions at the atomic level. [1]
Alan Jay Heeger (born January 22, 1936) is an American physicist, academic and Nobel Prize laureate in chemistry.. Heegar was elected as a member into the National Academy of Engineering in 2002 for co-founding the field of conducting polymers and for pioneering work in making these novel materials available for technological applications.
In 2016, AIPMT/NEET Phase-1 was conducted on 1 May 2016 and NEET Phase-2 was conducted on 24 July 2016. [2] Timeline How AIPMT is Scrapped - On 2012 - The Medical Council of India (MCI) and Dental Council of India (DCI) conducted NEET for the admissions in UG and PG programmes in government and Private colleges in India.
In inorganic chemistry, it is common to consider a single value of electronegativity to be valid for most "normal" situations. While this approach has the advantage of simplicity, it is clear that the electronegativity of an element is not an invariable atomic property and, in particular, increases with the oxidation state of the element.
American Chemistry Council (ACC), known as the Manufacturing Chemists' Association [2] at its founding in 1872 [3] then as the Chemical Manufacturers' Association [4] (from 1978 until 2000 [5] [6]), is an industry trade association for American chemical companies, based in Washington, D.C.