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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.
What else can I help you with?
Is francium a radioactive element?
Francium (Fr) is a natural radioactive element, extremely rare.
What characterizes a radioactive element?
A radioactive element is characterized by having unstable atomic nuclei that decay and emit radiation in the form of alpha particles, beta particles, or gamma rays. This decay process results in the transformation of the element into a different element or isotope.
What is radioactive element in chemistry?
A radioactive element is an element that has an unstable nucleus, leading to the emission of radiation in the form of alpha, beta, or gamma particles. This emission is a result of the element's attempt to achieve a more stable configuration. Common examples of radioactive elements include uranium, thorium, and radium.
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.
What element is radioactive and synthetic plutonium xenon barium or cesium?
Plutonium and xenon are radioactive elements. Plutonium is a synthetic element, while xenon occurs naturally but can also be produced synthetically. Barium and cesium are not synthetic elements but can have radioactive isotopes.
Can one element change into a different element?
Yes, but only if it is radioactive. Radioactive elements change into different elements through radioactive decay.
What element family have no radioactive elements?
Radioactive elements exist in all groups of the periodic table.
Which radioactive element used in AIDS treatment?
Radioactive elements are not used in the treatment of AIDS.
Are all elements periodically change to become new element s?
No. Only radioactive elements, which undergo radioactive decay can change to different elements.
Is francium a radioactive element?
Francium (Fr) is a natural radioactive element, extremely rare.
What characterizes a radioactive element?
A radioactive element is characterized by having unstable atomic nuclei that decay and emit radiation in the form of alpha particles, beta particles, or gamma rays. This decay process results in the transformation of the element into a different element or isotope.
Which lanthanide element and which transition element have only radioactive isotopes?
All or almost all elements have radioactive isotopes if artificial isotopes are included. Among the naturally occurring elements, uranium, polonium, radium, and thorium have naturally occurring radioactive isotopes on earth.
When a different kind element that radioactive is mixed with another element that not radioactive does it react?
Of course. Chemistry still applies, and that is based on the electron configuration, not the nucleus, per se.
Is mendelevium poisonous to plants animals or humans?
Mendelevium is a radioactive element. Generally radioactive elements are dangerous.
What elements on the periodic table is a radioactive element?
Lanthanides and Actinides probably
Definition of elements that are stable?
This is an element (more exactly an isotope) which is not radioactive.
Why do we put in lead chamber for radioactive element?
Radioactive elements always emit hazardous radiations.Lead metal absorbs these radiations .Hence we put any radioactive element in a lead chamber.
