0
Where on the periodic table are the majority of radioactive isotopes found write the isotope symbol for one example of radioactive isotope?
Wiki User
∙ 6y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Is an element made up of atoms with the same number of protons?
Isotopes of an element have the same number of protons and electrons, but different numbers of neutrons. Any element is made up of a combination of isotopes. For example if you are looking at carbon, there is carbon-12 and carbon-13, which are stable, and carbon-14 which is radioactive. This is true for many elements, and the atomic mass, the one displayed on the periodic table, is an average of the masses of all of the isotopes. But the atomic number of all isotopes is the same. http://www.chem4kids.com/files/atom_isotopes.html http://www.colorado.edu/physics/2000/isotopes/index.html
Does silicon have any isotopes?
Yes: Naturally occurring silicon contains isotopes with mass numbers 28, 29, and 30 in order of decreasing abundance. As with almost any element, many artificial, radioactive isotopes are also known.
Is the fission of uranium 235 an example of natural or artificial radioactivity?
Practically all the isotopes obtained by the nuclear fission of uranium are artificial radioactive isotope.
Example of isotopes?
hydrogen and deuterium is an example
How are radioactive isotopes used determine the absolute age of igneous rock?
Answer : When the isotopes decay, scientists can find out how old the rock is depending on the radioactive isotope's half-life. Explanation: Radioactive isotopes are unstable and will decay. For example, when humans die carbon-14 decays. The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope. At the next half-life there will be 25% of the radioactive isotope and 75% of the stable isotope. At the next half life there will be 12.5% radioactive and 87.5% stable. Example: Carbon-14 is a radioactive isotope with a half life of 5,730 years. How old would carbon-14 be when there is 75% carbon-14 in the rock? 75% is half of the time before the half-life, so it would be 2,365 years. Hope this helps. Half life helps scientists find how much the isotope has decayed and the age of the rock.
What element has all of their isotopes radioactive?
An example is uranium.
Is astatine an example of radioactive element?
Yes. There are no stable isotopes of astatine, they are all radioactive.
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.
Elements after which element are radioactive?
The atoms that are radioactive are those with unstable nuclei. There is no easy way to tell which is which, so the isotope has to be looked up. All elements have at least some radioactive isotopes. There are 36 elements for which all radioactive isotopes are synthetic or fission products, so for practical purposes, there are no radioactive isotopes of them in nature, except where introduced by human activity. They include most of the common elements we find in nature, but not all. There are 44 elements that are found as stable isotopes, but at least traces of radioactive isotopes are found in nature. Among these are hydrogen, carbon, sodium, silicon, chlorine, and potassium, all of which are necessary for life. Radioactive potassium, in particular, is present as 0.012% of all potassium. For another group of elements, including technetium, promethium, and all with atomic numbers of 83 (bismuth) or more, there is no isotope that is stable.
Is uranium an example of an unstable element?
All the isotopes of uranium (natural or artificial) are radioactive and unstable.
What is the last member of this group all isotopes of this element are radioactive?
For example francium in the group 1.
Pollutant not created by fossil fuels?
One example of a deadly pollutant not created by fossil fuels is highly toxic radioactive waste, which is the bi-product of using radioactive isotopes.
What are atoms with the same number of protons and different numbers of neutrons called?
Isotopes have the same number of protons but a different number of neutrons. Different isotopes of a single element are on the same position on the periodic table of elements. The existence of isotopes was first suggested in 1913 by a radiochemist named Frederick Soddy.
Why would a fusion reactor produce less radioactive waste than a fission reactor?
In my understanding, this is because a fusion reactor reacts deuterium to produce helium, which is not radioactive, whereas a fission uses uranium or plutonium, for example, which may react to form various radioactive isotopes. A fusion reactor may contain small quantities of tritium, in which case a radioactive isotope of hydrogen may be produced, but given that the majority of reactions occurring involve solely the deuterium, there is less radioactive waste produced.
Is an element made up of atoms with the same number of protons?
Isotopes of an element have the same number of protons and electrons, but different numbers of neutrons. Any element is made up of a combination of isotopes. For example if you are looking at carbon, there is carbon-12 and carbon-13, which are stable, and carbon-14 which is radioactive. This is true for many elements, and the atomic mass, the one displayed on the periodic table, is an average of the masses of all of the isotopes. But the atomic number of all isotopes is the same. http://www.chem4kids.com/files/atom_isotopes.html http://www.colorado.edu/physics/2000/isotopes/index.html
Does silicon have any isotopes?
Yes: Naturally occurring silicon contains isotopes with mass numbers 28, 29, and 30 in order of decreasing abundance. As with almost any element, many artificial, radioactive isotopes are also known.
Is the fission of uranium 235 an example of natural or artificial radioactivity?
Practically all the isotopes obtained by the nuclear fission of uranium are artificial radioactive isotope.
