iÂ·onÂ·ic bond. A chemical bond formed between two ions with opposite charges. Ionic bonds form when one atom gives up one or more electrons to another atom. These bonds can form between a pair of atoms or between molecules and are the type of bond found in salts.
The answer is supernovae. In a supernova explosion, neutron capture reactions take place (this is not fusion), leading to the formation of heavy elements. This is the reason why it is said that most of the stuff that we see around us come from stars and supernovae (the heavy elements part).
When a red giant star has changed all of its helium into carbon and oxygen, it then begins to turn the carbon and oxygen atoms into iron Atoms. Iron is the heaviest kind of atom that a star can make, so when a star has made most of its carbon and oxygen into iron, it becomes a supernova and explodes.hen the supernova explodes, it shoots out carbon, oxygen, and iron atoms all over the Universe, and eventually gravity sucks these atoms into new planets like Earth. All of the iron on Earth was originally inside stars.