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In general, those would be the substances that have the shortest half-life. There are lots of isotopes that decay in less than a second; in some cases, the half-life can be a millionth of a second, a billionth of a second, or even less. You can find some information about such isotopes in the Wikipedia article on "Nuclide".
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A substance is labeled as being radioactive The substance is?
Radioactive.
What is the difference between a non-radioactive substance and a radioactive substance?
Radioactive substances are unstable as a result of the extra neutrons present in the nuclei of the substance. Non-radioactive substances are stable.
Is radioactive waste a pure substance or a mixture?
Radioactive waste is nearly always a mixture but it is possible to be a pure substance.
What is a radio substance?
A radioactive substance emit nuclear radiations.
Is plutonium a radioactive substance?
Yes
Is Pm a radioactive substance?
Pm is Prometheum. All isotopes of this element are radioactive.
What is the world's most widely consumed psychoactive substance?
Caffeine is the world's most widely consumed psychoactive substance. It is found in coffee, tea, and various other beverages and foods, and is known for its stimulating effects on the brain and nervous system.
Can anyone give you an example of a radioactive substance?
H3, Deuterium is radioactive. Uranium and plutonium are radioactive and are used in atomic bombs.
What is the most radioactive rock in the world?
uranium and polonium
What is a beta emitter?
In physics, an alpha emitter is a radioactive substance which decays by emitting alpha particles.
What does radioactive hazard mean?
That the substance is dangerous & explosive.
The original sample of a radioactive substance?
Yes, and the question is ... ?
