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Most elements are chemically reactive to some extent. The noble gas elements are not reactive, and of those, helium is the most perfectly unreactive, absolutely nothing can make it react. There are also several metals that are relatively unreactive; the most inert metal is platinum. Stainless steel is an alloy that is relatively unreactive, so even though iron is quite reactive under other circumstances, when mixed with chromium it becomes much less reactive.
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∙ 11y ago
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∙ 14y agoAll atoms are reactive given the right circumstances, but the only "atoms" that don't react with anything given a reasonably low temperature, and an absence of some crazy phenomenon would be the noble gasses.
This is because they have the maximum number of valance electrons for the specific orbitals that they contain, and do not need to add or remove electrons to reach a state of balance.
The two most used maximum number of valance electrons for an atom would be 2 (helium), and 8 (neon, argon, krypton, xenon, and radon). These elements can still react with other elements, but the prerequisites for such a reaction are so astronomical that, as far as general chemistry is concerned, they are ignored.
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A radioactive element has an unstable nucleus that emits particles in the form of alpha, beta, or gamma radiation. A stable element has a nucleus that does not emit such particles.
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∙ 11y agoAn element is considered radioactive when there is an unstable nucleus. This nucleus would therefore emit, and alpha, beta, or gamma radiation.
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∙ 15y agoa stable element has 8 outer level (valence) electrons, and reactive elements have 7 or less electrons.
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∙ 8y agoThe election configuration. If the element has a stable octet it will be less reactive.
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∙ 13y agoThere structure
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Is uranium a example of a radioactive element?
All elements have radioactive isotopes. Add a couple of hundred neutrons, and any stable element becomes radioactive.Technetium, promethium, and anything heavier than bismuth (element 83) will have radioactive decay.radio active elements can be uranium,radium,thorium,polonium,actinium etc.usually all elements of atomic number higher than 82 show radioactivity.
Is carbon a more stable element than silicon?
Silicon is more stable.
How do you find the numbers of neutrons in an atom?
The number of neutrons in an atom is not a constant. It is equal to or greater than the number of protons, and the number of neutrons changes the atomic mass number, as the proton number is constant. Atoms with different numbers of neutrons are called isotopes. Some are stable, some are unstable, some are radioactive.
Is the element Potassium stable or radioactive?
99.996% of calcium found in nature is not radioactive. 0.004% of natural calcium is radioactive 46Ca, and there are also trace quantities of radioactive 41Ca found naturally. Like all other elements, calcium has synthetic radioactive isotopes.The calcium you deal with in every day life is not, no. Some isotopes are, but they are not found in natural calcium deposits
What is stable elements?
Unstable elements are radioactive elements that spontaneously decay into other elements. Some are: Radon Uranium Plutonium See the related link for an article giving greater detail on isotope stability.
Does a radioactive element become stable after its mass number become less than 82?
Not always -- Hydrogen-3 is radioactive, for example.
Do radioactive atoms have different atomic weights than non radioactive atoms of the same element?
yes
All substances that naturally undergo radioactive decay do so until they finally become a stable isotope of one particular element what is the element?
The decay of radioactive substances follows a decay chain that will sooner or later result in the appearance of a stable isotope of lead. There is an exception for the atoms of a few substances that have undergone decay by spontaneous fission.
What is unknown radioactive elements?
A radioactive element is the element which radiates continuously giving alpha, beta, and gamma rays. The elements having atomic no. more than 82 are mostly considered as radioactive elements. These elements emit radiations by themselves even if if they are not get touched. They are discovered by Maria Curie and Pierre Curie in 1907
Why is it that some isotopes of an element are able to exist indefinitely?
Some isotypes are more stable than others. Decay occurs because of instability in isotopes, so stable isotopes do not undergo radioactive decay.
Is Mercury unstable and also radioactive?
No the element Mercury is not Radioactive. None of the mercury ordinarily found in nature is radioactive. Like all elements, there are synthetic radioactive isotopes of mercury.
Is uranium a example of a radioactive element?
All elements have radioactive isotopes. Add a couple of hundred neutrons, and any stable element becomes radioactive.Technetium, promethium, and anything heavier than bismuth (element 83) will have radioactive decay.radio active elements can be uranium,radium,thorium,polonium,actinium etc.usually all elements of atomic number higher than 82 show radioactivity.
Is radium more powerful then a radioactive element?
Your question is meaningless. Radium IS a radioactive element, and its power depends on the context. If you mean "is there an element more radioactive than radium" then yes, there are many, e.g. astatine.
Can there be more than one isotope of an element example?
Yes, the number of neutrons can be any number you want it to be, however there is typically only one stable isotope of an element. Radioactive elements and those in the f-block are more likely to have more than one isotope.
Atoms that are unstable are more likely to be what than atoms that are stable?
radioisotopes
Is carbon a more stable element than silicon?
Silicon is more stable.
All the isotopes of this element are radioactive?
Promethium, Technetium, and any element heavier than Bismuth.
