The element with a mass number of 14 is Nitrogen. Nitrogen is a chemical element with the symbol N and atomic number 7. It is a common element in the universe, estimated at about seventh in total abundance in the Milky Way and the Solar System.
The mass number of an element is the sum of the number of protons and neutrons in the nucleus of an atom. For Nitrogen-14, it has 7 protons and 7 neutrons, which adds up to the mass number of 14.
Nitrogen is a crucial component of amino acids and nucleic acids, making it essential for life. It is also a major constituent of the Earth’s atmosphere, where it exists as a diatomic gas (N2).