Silver3504
Arizona, United States
 
 
:cleanhourglass:
현재 오프라인
plootyo 2025년 1월 10일 오후 5시 16분 
In nature, uranium is found as uranium-238 (99.2739–99.2752%), uranium-235 (0.7198–0.7202%), and a very small amount of uranium-234 (0.0050–0.0059%).[4] Uranium decays slowly by emitting an alpha particle. The half-life of uranium-238 is about 4.47 billion years and that of uranium-235 is 704 million years,[5] making them useful in dating the age of the Earth.
plootyo 2025년 1월 10일 오후 5시 16분 
Uranium is a chemical element with the symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Uranium is weakly radioactive because all isotopes of uranium are unstable; the half-lives of its naturally occurring isotopes range between 159,200 years and 4.5 billion years. The most common isotopes in natural uranium are uranium-238 (which has 146 neutrons and accounts for over 99% of uranium on Earth) and uranium-235 (which has 143 neutrons). Uranium has the highest atomic weight of the primordially occurring elements. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. It occurs naturally in low concentrations of a few parts per million in soil, rock and water, and is commercially extracted from uranium-bearing minerals such as uraninite.[3]
deaconkingbacon 2024년 12월 20일 오후 1시 49분 
I better not see YOU or your stupid ass glasses join my lobby EVER AGAIN. You Bozo.
SweetFri 2024년 12월 3일 오후 4시 14분 
You should comb your hair more, greasy monkey filth-magnet.
スポンジ・ボブ 2024년 12월 2일 오후 10시 24분 
-rep stupid as ♥♥♥♥ this guy is stupid he is dumb low intelligence get his iq checked low key kinda dumb and low key kinda stupid AF this guy needs to go to a mental institution
スポンジ・ボブ 2024년 12월 2일 오후 10시 21분 
-rep of different ethnicity