Hydrogen is one of the most abundant elements in the universe. This highly flammable element is said to comprise about 75 percent of the universe by volume. Hydrogen is prominent in many types of compounds most especially the compounds that are integral parts of many organic materials. In fact, almost everyone on the planet consume hydrogen every single day in the form of water and in most foods that are eaten. Most people also know hydrogen as a potential fuel alternative because of talks and discussions about it as a fuel source.
Hydrogen’s atomic number is one, and its periodic table symbol is H. Hydrogen is unique in that it is a standalone element. It is so called standalone because it is not classified with other elements. There are many scientists who consider hydrogen as a basic or fundamental building block mainly because the element’s structure is so simple and is considered the basis of many different things. Hydrogen, which appears as a colorless gas, also has a number of industrial applications. In fact, it is an important part of petroleum refining.
Just like almost all of the gases, hydrogen is not readily available in its pure form on earth. Because of this, it took quite a while before scientists were able to determine hydrogen as an element. Hydrogen was already described as early as the 1400s because of the production of the gas when acids and metals were combined to produce the flammable element. It was in 1766 when hydrogen was finally classified as an element.