The 42nd Chess Olympiad, organized by FIDE, will take place in Baku, Azerbaijan in 2016. There were two other cities bidding to host the event – Albena in Bulgaria and Tallinn in Estonia. Both cities did not make presentations before the voting and hence were not approved. The delegation of Armenia declared that participation of the Armenian chess players would be in that case impossible. Despite a protest of triple winners of the Chess Olympiad, due to the lack of other candidates for carrying out competition in 2016, the candidature of Baku was accepted. On February 16, FIDE announced that the...

Sodium hydride is the chemical compound with the empirical formula NaH. It is primarily used as a strong, yet combustible base in organic synthesis. NaH is representative of the saline hydrides, meaning it is a salt-like hydride, composed of Na+ and H− ions, in contrast to the more molecular hydrides such as borane, methane, ammonia and water. It is an ionic material that is insoluble in organic solvents (although soluble in molten Na), consistent with the fact that H− remains an unknown anion in solution. Because of the insolubility of NaH, all reactions involving NaH occur at the surface of the...