Element 101, Md, is named after which Russian chemist?
Dmitri Mendeleev Technology of Russia. After him was also named mendelevium, which is a synthetic chemical element with the symbol Md (formerly Mv) and the atomic number 101. It is a metallic radioactive transuranic element in the actinide series, usually synthesized by bombarding einsteinium with alpha particles. The newly discovered mineral mendeleevite-Ce, Cs(CeCa)(SiO)(OH,F)(HO), was named in Mendeleev's honor in 2010. The related species mendeleevite-Nd, Cs[(Nd,REE)Ca](SiO)(OH,F)(HO), was described in 2015. A large lunar impact crater Mendeleev that is located on the far side of the Moon, as seen from the Earth, also bears the name of the scientist. The Russian Academy of Sciences
Period 5 element Niobium, or columbium, is a chemical element with the symbol Nb and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology: "Niobe", daughter of "Tantalus". Niobium has physical and chemical properties similar to those of the element tantalum, and the two are therefore difficult to distinguish. The English chemistCharles Hatchett reported a new element similar to tantalum in 1801, and named it columbium. In 1809, the English chemist William Hyde Wollaston wrongly concluded that tantalum and