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.
Francium (Fr) is a natural radioactive element, extremely rare.
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.
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.
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.
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.
Yes, but only if it is radioactive. Radioactive elements change into different elements through radioactive decay.
Radioactive elements exist in all groups of the periodic table.
Radioactive elements are not used in the treatment of AIDS.
No. Only radioactive elements, which undergo radioactive decay can change to different elements.
Francium (Fr) is a natural radioactive element, extremely rare.
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.
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.
Of course. Chemistry still applies, and that is based on the electron configuration, not the nucleus, per se.
Mendelevium is a radioactive element. Generally radioactive elements are dangerous.
Lanthanides and Actinides probably
This is an element (more exactly an isotope) which is not radioactive.
Radioactive elements always emit hazardous radiations.Lead metal absorbs these radiations .Hence we put any radioactive element in a lead chamber.