Atomic Number 1 (Noun)
Meaning
A nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe.
Classification
Nouns denoting substances.
Examples
- Hydrogen is an atomic number 1 element and is also the lightest and most abundant chemical element in the universe.
- The characteristics of the atomic number 1 element make it very reactive, so it is difficult to find as a diatomic gas outside of being contained or reacting naturally with other elements.
- In most stars, hydrogen is the atomic number 1 element used for nuclear reactions to produce light and energy through a process known as nuclear fusion.
- Due to its atomic number 1, hydrogen has the lightest nucleus of all elements – each one consisting of just one positively charged proton and no neutrons, only rarely one or two neutrons in one rare variant commonly known as heavy hydrogen.
- As the atomic number 1 element, hydrogen interacts with other atoms as the major source of mass that later forms more massive elements through nuclear fusion (the process by which it forms stars).