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The question is not that straight-forward... For example Polonium releases a lot of radiation in alpha-particles, arguably most of all feasable elements, but the half-life of it's isotopes is rather short. Also, alpha particles won't do too much damage as they bounce off pretty much anything (as opposed to gamma, which need thick slabs of lead to be stopped).
There are also "evil" isotopes of non-radioactive elements, for example Niobium-95, which pretty much takes the cake in activity and it releases beta and gamma particles (ouch!), but with a half-life of 35 days it's not that much of a hazzard.
Also, Radon is kind of a nasty because it's a gas and it's actually not that rare. Long half-life, non-reactive, gaseous and quite present on the surface of the planet...
What else can I help you with?
What is the single most radioactive element in the world?
i think it's plutonium
What is the breakdown of a radioactive isotope of the same element or of another element?
radioactive decay
Radioactive element beginning with R?
The radioactive element that begins with the letter R is radium. Radium is a highly radioactive element and is found in uranium ores. It emits alpha, beta, and gamma radiation.
What element is radioactive and explosive?
There are at least 50 different elements produced in a nuclear explosion, most are fission products in 2 peaks, some are formed by neutron capture and beta decay. The majority of these are radioactive isotopes of the elements.
Is the element aluminum radioactive?
no because if it was we wouldn't use it if it was radioactive
What is the single most radioactive element in the world?
i think it's plutonium
How do you put radioactive into a sentence?
The radioactive element was observed by many scientists around the world.
Is the element sodium radioactive or non-radioactive?
non radioactive element
What Element stays radioactive for millions of years?
The element that can stay radioactive for millions of years is plutonium. This is where most nuclear power plant energy comes from.
How do you use radioactive element in a sentence?
A radioactive element is one that discharges radiation. Uranium is a radioactive element. A radioactive element is very dangerous if you don't have protective clothing. You should never go near a radioactive element.
Is All isotopes of a given element are radioactive?
No. The most common isotope(s) of an element are often stable.
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 the breakdown of a radioactive isotope of the same element or of another element?
radioactive decay
What element is a radioactive element?
The radioactive element is composed of unstable nuclei that try to reach stability through emitting nuclear radiations as alpha, beta, and gamma nuclear radiations.
What is the most radioactive thing?
Thorium, an element rarely found in some minerals.
Which is the most abundant radioactive element in India?
Thorium Th Cheers Sharath
