elements · 27 / 118 · All 118

Cobalt

Z: 27
Mass: 58.933
Lifeforce: Earth
In the body: thyroid

Miners named it after the kobold, the spirit they blamed for poisoned ore. Today the maligned element sits in every lithium-ion battery you carry.

A terraced slope with laid stone foundations and visible roots; a figure sets a stone in place. — Plate · Earth Earth never hurries. It *holds*, stone by stone, whatever is meant to last.

Cobalt. Element twenty-seven. Named for the kobold, the underground spirit miners blamed for poisoned ore. Now in every lithium-ion battery you carry.

Lab note · Atomic number 27; ≈3 mg in the body, the heart of vitamin B12.

Tool · Cosmic origin

Where your atoms come from

Co · Supernova

Born in supernova explosions, the death of massive stars scattering their innards across the galaxy.

65 of the 118 elements share this origin.

Choose a stage: click, or arrow keys. · Cosmic nucleosynthesis · current standard model

Tool · Periodic table

Your place in the system

H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og

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