Uranium

Yes, medicines can be harmful if used improperly. Taking the wrong dose, mixing medications incorrectly, or not following the prescribed instructions can lead to adverse effects on health. It is crucial to always use medicines as directed by a healthcare professional to ensure safety and effectiveness.

Uranium-239 does NOT decay by alpha decay, it decays only by beta and gammadecay.

It is currently (October 2010) about $50 per pound, for fuel grade (U235 enriched Uranium) material. In 2003 the price was around $24 per pound, and was up nearly $100 a pound three years ago.

The reactors at Fukushima still have their full load of uranium from when they were operating. Radiation levels are far too high to have permitted workers to remove any, also there is the structural damage that has probably jammed fuel rods in place which would prevent removal without demolishing the reactors first.

1. Uranium is a possible polluting agent of the natural environment.
2. Uranium is a toxic and a radioactive chemical element.
3. Uranium release radium and radon. 4. Radioactive wastes are dangerous and need to be isolated.
If working responsibly most of the disadvantages call very limited. And are the major advantages of using uranium especially as nuclear fuel..

proliferation

This is an alpha decay.
The half-life of uranium-238 is 4,468.10ex.9 years.

Uranium decay heat deep in the earth's core and lower mantle drives convection currents. In the core this produces a dynamo and maintains earth's strong magnetic field. In the mantle it drives plate tectonics and may be responsible for hot spot volcanos (like Hawaii and Yellowstone).

in the nucleus

Volcanoes do not produce uranium.

The concentration of uranium in granites is 10-20 mg/kg.