In this section, we will describe different types of software testing. Various types of software testing are performed to achieve different objectives when testing a software application. You can also read about different Software Testing Techniques which can be associated with various types of software testing.
Alpha hydrogens in an ester. Alpha hydrogens in an alkyl bromide. 1  Related terms: Î²-carbon, beta-carbon, primary hydrogen, secondary hydrogen, tertiary hydrogen, Î²-hydrogen, beta-hydrogen, Î²-elimination, Î±-helix, Î²-sheet.lpha hydrogens in an ester. Alpha hydrogens in an alkyl bromide. 1  Related terms: Î²-carbon, beta-carbon, primary hydrogen, secondary hydrogen, tertiary hydrogen, Î²-hydrogen, beta-hydrogen, Î²-elimination, Î±-helix, Î²-sheet.
Cavendish described accurately hydrogen's properties but thought erroneously that the gas originated from the metal rather than from the acid. Hydrogen was named by Lavoisier. Deuterium gas (2 H 2, often written D 2), made up from deuterium, a heavy isotope of hydrogen, was discovered in 1931 by Harold Urey, a professor of chemistry at Chicago and California (both USA).