elements · 5 / 118 · All 118

Boron

Z: 5
Mass: 10.81
Lifeforce: Air

It washes clothes, hardens steel, kills fungi. And it dates from before the galaxies. No star ever forged boron: it was born where cosmic rays collide. A handful of its crystals can be harder than diamond.

Kites and birds weave a bridge of threads between two hills. — Plate · Air Air never keeps to itself. It *connects* what two hills hold apart.

Boron. Element five. Hardens steel, kills fungi, washes clothes. A handful of its crystals can be harder than diamond. Forged not in stars but in cosmic ray collisions, a wanderer from before there were galaxies.

Lab note · Atomic number 5; not formed in stars, but in collisions of cosmic rays.

Tool · Cosmic origin

Where your atoms come from

B · Star fusion

Forged in the cores of living stars over billions of years of stellar fusion.

14 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

Fire
Water
Air
Earth
Source

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