elements · 26 / 118 · All 118
Fe
Iron
- Z
- 26
- Mass
- 55.845
- Lifeforce
- Earth
- In the body
- brain, heart, lungs, liver
The boundary of stars — the heaviest element stellar fusion still produces at a profit. Beyond iron, only supernovae forge. Iron is in your blood, in Earth's core, in the rust of dying stars.
The endpoint of stellar fusion. When a star’s core becomes iron, fusion ceases and the star collapses — and explodes, scattering iron across the galaxy.
Lab note · 4 grams in your body, half of it in hemoglobin. Hemoglobin carries oxygen because iron grabs it. Every red blood cell holds 280 million iron atoms.