Roentgenium facts for kids
Roentgenium (pronounced /rɛntˈgɛniəm/) is a chemical element. It is a transition metal. Its symbol is Rg, and its position in the periodic table of the elements is 111. It is named in honor of Wilhelm Conrad Röntgen, a German physicist.
So far, it has not been found in nature. There seem to be 7 isotopes. All of them are radioactive. They have a half life of between 1.6 milliseconds and 26 seconds. Because of the Inert pair effect, it could have a color similar to that of gold.
| Periodic table | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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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Roentgenium was named after the physicist Wilhelm Röntgen, the discoverer of X-rays.
See also
In Spanish: Roentgenio para niños
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Roentgenium Facts for Kids. Kiddle Encyclopedia.