The atoms of different elements have different numbers of protons. All oxygen atoms have 8 protons and all sodium atoms have 11 protons. The nucleon number (or mass number) of an atom is the total ...

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

Iron has a mass number of 56 and is one of the most stable of all the elements. We say that iron has a high binding energy per nucleon. Elements with lower and higher mass numbers per nucleon are ...

Sometimes these elements are unwanted; other times they're intentionally added. Carbon (C): Carbon, a nonmetallic element, forms a number of organic and inorganic compounds and can be found in ...

We expect the effect to be even stronger for elements heavier than carbon ... achieve without understanding the three-nucleon force. For magic number nuclei, conditions that provide colossal ...

while fusion joins two light elements (with a low atomic mass number), forming a heavier element. In both cases, energy is freed because the mass of the remaining nucleus is smaller than the mass of ...