Astatine facts for kids
Astatine is a chemical element. Its atomic number (which is the number of protons in it) is 85, and its atomic weight (which is approximately the number of protons plus the number of neutrons in it) is 210. It is part of the Group 7 (halogens) on the periodic table of elements. Some of its isotopes may be in nature. But because it is extremely unstable (roughly speaking, the atoms fall apart), only about an ounce exists in the Earth's crust at one point in time. It is radioactive. The longest-living isotope 210At has a half-life of a bit over eight hours.It is used in the form of an astatine isotope.It is used for cancer treatment and in Radioactive tracers.
| Periodic table | |||||||||||||||||||||||||||||||||||||||||
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| 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 | Uut | Fl | Uup | Lv | Uus | Uuo | ||||||||||
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Images for kids
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Emilio Segrè, one of the discoverers of the main-group element astatine
See also
In Spanish: Astato para niños
