Uranium 235 the most common fuel in, uranium is one of the symbols of and .
TheNatural consists of three radioactive (238U, 235U and 234U). Most reactors operate on 235U enriched uranium (about 1.5 to 3% instead of 0.72% normally).
- Symbol: U
- Atomic number: 92
- Electrons by : 2, 8, 18, 32, 21, 9, 2
- Atomic mass: 238.02891 u
- The most stable isotopes: 238 U with a of 4.4688 billion years (99.2742%), 235 U with a half-life of 703.8 million years (0.7202%)
- Series: actinide
- Group, period, block: L / A, 7, f
- Density: 19.1
- Point of : 1135 ° C
- Boiling point: 4.131 ° C
History of uranium 235:
Uranium was discovered by Klaproth in 1789 while conducting experiments on pitchblende. Thewas isolated for the first time in 1841.
Klaproth named the element he had just discovered “uranium” in tribute to the planet, which had been discovered a few years earlier. It itself takes its name from Ouranos , the sky god among the Greeks.
Properties of uranium 235:
1.Once purified, uranium is a silver-white, shiny, fairly dense metal.
2.It is harder than most other elements.
3.Malleable,and slightly , uranium is also highly electropositive.
4.It is however a bad electrical conductor.
5.Uranium reacts with almost all non-metallic elements, except rare.
6.It is ubiquitous in nature and found in varying but low amounts in rocks, soil, water,, plants, animals and humans.
7.There is an average of approximately 90 μg (micrograms) of uranium in the human body from air, water and absorbed food.
8.About 66% are found in the skeleton, 16% in the, 8% in the and 10% in the other tissues.
Use of uranium:
1.The isotope 235 of uranium, present in very small quantities in natural uranium, is the radioactive isotope most used in the nuclear energy production sector.
2.It is also the key ingredient of the first atomic bomb used during a war, Little Boy , dropped on the Japanese city of Hiroshima on August 6, 1945.
3.The military also use uranium in a form depleted of uranium 235 for its penetrating and incendiary power.
4.Historically, uranium has been used as ain glassmaking for and .
5.Someuse it as a .
6.Thegives the , another nuclear .
Also read it: