Certain elements are naturally radioactive in all of their isotopes. Uranium is the best example of such an element and is the heaviest naturally occurring radioactive element. There are eight other naturally radioactive elements: polonium, astatine, radon, francium, radium, actinium, thorium and ...
Both isotopes of uranium are naturally radioactive; their bulky atoms disintegrating over time. Given enough time (hundreds of thousands of years), uranium will eventually lose so many particles that it will turn into lead. This process of decay can be greatly accelerated in what is known as a...
Certain elements are naturally radioactive in all of their isotopes. Uranium is the best example of such an element and is the heaviest naturally occurring radioactive element. There are eight other naturally radioactive elements: polonium, astatine, radon, francium, radium, actinium, thorium and ...
How many years does it take until only 15% of the original amount remains? Cobalt-60 has a half-life of 5.26 years. If 1.00 g of 60-Co were allowed to decay, how many grams would be left after: a. one half-life? b. two half-lives?...
How many protons does an alpha particle have? How are subatomic particles responsible for an atom's characteristics? How is particulate matter controlled? Explain how alpha particles interact with atoms as they pass through air, and explain why alpha particles would not pass through the sides of ...
In 1903, Curie shared the Nobel Prize for Physics with her husband Pierre, with whom she isolated the radioactive isotopes polonium and radium. After Pierre was struck and killed by a horse-drawn wagon in 1906, Curie devoted more of her time to researching radioactivity than to rearing Ève...
It's not that simple though. An atom's properties can change considerably based on how many of each particle it has. If you change the number of protons, you wind up with a different element altogether. If you alter the number of neutrons in an atom, you wind up with an isotope. For...
Many other radium girls died over the years, but a link was never proven and the company never took responsibility [source: Irvine]. Ionizing Radiation X-ray of a young boy's torso. Sami Sarkis/Getty Images Similar to non-ionizing radiation, ionizing radiation is energy in the form of...
It's not that simple though. An atom's properties can change considerably based on how many of each particle it has. If you change the number of protons, you wind up with a different element altogether. If you alter the number of neutrons in an atom, you wind up with an isotope. For...
Certain elements are naturally radioactive in all of their isotopes. Uranium is the best example of such an element and is the heaviest naturally occurring radioactive element. There are eight other naturally radioactive elements: polonium, astatine, radon, francium, radium, actinium, thorium and ...