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Its nucleus is unstable.

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13y ago

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If a substance is radioactive is its compound radioactive?

Yes. A radioactive atom is a radioactive atom. If that atom exists as a single atom and is uncombined and it is radioactive, it's radioactive. If that same atom is chemically combined with another or other atoms, it's still radioactive. It's just that simple.


True or false unstable atom that decomposes and emits energy is called retroactive?

No, it's called "radioactive." "Retroactive" is something that's active in regards to the past.


What are the characteristics of a atom?

A radioactive atom is an atom of an element with an unstable nucleus.


Where in the atom do radioactive emissions originate?

They originate in the nucleus of the atom.


What happens to a radioactive atom after it has emitted its radiation?

The initial atom is transformed in another atom.


Is a radioactive atom always an isotope?

No, not always.


What is the term for an atom the decays?

unstable, radioactive


What do you call a atom that decays?

An atom whose nucleus decays over time is called radioactive. Some examples of radioactive substances are uranium, plutonium, and einsteinium.


The atom that remains after a nucleus disintegrates is what?

smaller than the original atom and possibly radioactive


Atom with an unstable nucelus is called?

It is a radioactive element.


What is when the nucleus of an atom decomposes called?

radioactive decay


What is a radioactive atoms?

Radioactive atoms are atoms that have unstable nuclei, which can undergo radioactive decay to become more stable. During this process, they emit radiation in the form of alpha particles, beta particles, or gamma rays. This emission of radiation can cause a change in the atom's composition or energy level.