<p>Sir Edward Frankland was a British chemist and inventor who made significant contributions to the field of inorganic chemistry, including the development of the theory of valence and the discovery of several new elements.</p><p></p><p>Born in 1825 in Catterick, England, Frankland began his career as a chemist at the Royal College of Chemistry in London. He later went on to work at various institutions, including the University of Marburg in Germany and the University of St. Andrews in Scotland.</p><p></p><p>Frankland is best known for his work on the theory of valence, which explains the chemical bonding between atoms. He proposed that the valence of an element is determined by the number of electrons in its outermost shell, which is now known as the valence electron theory. This theory was later developed by other chemists, including Gilbert Lewis and Richard Abegg, and it forms the basis of modern inorganic chemistry.</p><p></p><p>Frankland also discovered several new elements, including gallium and indium, and he made important contributions to the understanding of the properties of these elements and their compounds. He also developed the concept of chemical symbols, which are now commonly used to represent elements on the periodic table.</p><p></p><p>Frankland was a highly respected chemist and was honored with many awards throughout his career, including the Royal Society's Davy Medal and the Copley Medal. He was also knighted in 1897 in recognition of his contributions to chemistry.</p><p></p><p>Frankland passed away in 1899, but his legacy lives on through his contributions to the field of inorganic chemistry. His work on the theory of valence and the discovery of new elements continue to be remembered and honored.</p><p></p><p>In conclusion, Sir Edward Frankland was a pioneering chemist who made significant contributions to the field of inorganic chemistry, including the development of the theory of valence and the discovery of several new elements. He was a respected chemist and was honored with many awards throughout his career. His legacy continues to be felt in the field of chemistry and his contributions to the field will be remembered for many years to come.</p><p></p><p></p>