The 2016 Summer Olympics, officially
known as the Games of XXXI
Olympiad, are the thirty-first summer
Olympic Games, the world’s largest international multisport event that is
held every four years.
The 2016 summer Ol ympi cs are
commonly known as Rio 2016, as this
competition will be held in Rio de
Boron was discovered by Joseph Louis
Gay – Lussac and Louis Thenard on
30 June 1808. It is known as very
hard element. It is a black and semimetallic element.
Boron is used as rocket fuel. It is used
to produce borosilicate glass and is used
as a controller of nuclear reactors.