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It is the unstable isotopes of elements that decay over time. All elements have an isotope or isotopes that are unstable and will decay over time. (These isotopes will be either naturally occurring or will be synthetic.) Some isotopes of some elements, however, are stable, and they will not undergo radioactive decay.
To discover what's what, we have to do some homework, and what better place to start than the table of nuclides? It lists all the elemets, and all the isotopes of each element. Further, it tells us which ones are stable, which are unstable, and will also help us determine the decay mode of the unstable nuclides.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoPersonally I think it isn't, but you can easily find a large material to study radioactive elements at Wikipedia.
Wiki User
∙ 10y agoNo. Most are stable ... and/or have stable isotopes.
You have to go above Lead for radioactive decay to become common.
Wiki User
∙ 7y agoYes, but the phenomenon is statistic.
Wiki User
∙ 15y agono
Wiki User
∙ 11y agono
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How do you use the periodic table of the elements?
Scientists from all over the world use the periodic table as it is quicker for equations, and its a symbol all of them will know from the Chinese to the Indian, so its an easier way all round.
Are all elements metals?
No, not all metals are considered to be elements. Brass for example is a combination of elements but is not an element itself.
Are all elements pure?
No, they can contain impurities.
How has Newcastle changed over time?
because of all the people coming over on boats
The period of elements that are all radioactive?
All elements comprising the period 7 in the periodic table are radioactive. In total this period has 32 elements.
How has americium changed over time?
As all radioactive elements, isotopes of americium continuously decay.
What is the name of the elements that have the atomic number over 95?
All these elements are raidoactive, and will decay with the emission of alpha, beata or gamma radiation.
Does all elements undergo nuclear decay?
No.
Why don't man made elements last long?
All elements on the periodic table after lead are unstable, meaning they decay over time. These elements generally become more unstable the further up you go. This is partly due to the fact that the large nuclei hold an enormous amount of energy, which is released by this decay. All elements heavier than iron are forged in exploding stars. However, once you get past uranium, not even a supernova has enough power to create such elements. It is only by concetrating elements and focusing energy that we are able to produce such high-energy elements.
Does Pepsi cause tooth decay?
All Sodas can over a long period of time. I would say that coke would cause faster decay than pepsi.
Are all elements periodically change to become new element s?
No. Only radioactive elements, which undergo radioactive decay can change to different elements.
What element continue to decay until they finally become stable?
All elements above the atomic number of 83 are radioactive, but two elements that are under it are also radioactive. They are technetium (atomic number 43) and promethium (atomic number 61). Radioactive elements are elements that decay until stable. =)
Do all exponential functions show growth over time?
If the exponent has the variable of time in it, then it will be either exponential growth (such as compound interest for example), or exponential decay (such as radioactive materials, or a capacitor discharging). If the time constant (coefficient of the time variable) is positive then it is growth, if the time constant is negative, then it is decay.
Can you be allergic to dirt?
no, for a few good reasons. First of all, dirt is a natural product of the earth's decay over millions of years and our bodies have adapted to it over time.
List of radioactive elements?
Elements that decay (give off protons and neutrons) to form other elements. *It's not elements as such that are stable or unstable, but rather isotopes. Even elements of small atomic number have unstable isotopes that undergo radioactive decay, for example carbon-14. Elements with higher atomic numbers than Lead (82) are naturally radioactive in all isotopes. Bismuth (83) has an extremely long half-life, but the time generally becomes shorter (the decay more rapid) as the size of the nucleus gets progressively larger for heavier radioactive elements.
What are synthesizers?
Synthetic elements are unstable chemical elements not naturally found on the earth. They are synthesized in the laboratory. All of them are unstable and radioactive in nature, which means they emit radiations and decay into other elements.
What is the process by which some substances spontaniously emit radiation?
All elements with an atomic number >83 are naturally radioactive
