A radioactive atom is an atom of an element with an unstable nucleus.
The presence or absence of a nucleus is the major characteristic that classifies a cell as either prokaryotic (lacking a nucleus) or eukaryotic (containing a nucleus). Eukaryotic cells also typically have membrane-bound organelles, while prokaryotic cells do not.
Membrane-enclosed organelles
The defining characteristic of eukaryotes is the presence of a membrane-bound nucleus that houses the genetic material (DNA). This nucleus separates the genetic material from the rest of the cell's contents, allowing for more complex control of gene expression and cellular functions.
Bacteria are prokaryotes, meaning they lack a cell nucleus.
The defining characteristic of prokaryotic cells that sets them apart from eukaryotic cells is the absence of a distinct nucleus.
No. A stable nucleus can form. If the new nucleus is radioactive, then it will contiue to decay until a non radioactive nucleus is attained.
True and False. Radioactivity is a characteristic of unstable atomic nuclei, whereas radioactive decay is the process that a radioactive nucleus undergoes when it decays due to its instability.Argument for true: Radioactivity is the tendency to undergo radioactive decay.Argument for false: The two terms are unrelated because one is a characteristic and the other is a process, and, therefore, the question misunderstands the definition of the terms.You choose your definition. This writer prefers false.
If an element is radioactive, it refers to the stability of their atomic nucleus. If that atomic nucleus is not stable, it is considered radioactive.
The characteristic time for the decay of a radioactive isotope is known as its half-life. This is the time it takes for half of the radioactive atoms in a sample to decay.
By definition. If it were stable, then it would not be radioactive.
Sometimes radioactive
It isn't really an ELEMENT that is unstable, but an ISOTOPE. That means that in general, for the same element, some atoms will decay, and some will not - the difference being the number of neutrons in the nucleus.
If you are referring to a cell's nucleus than the simple answer is that's not radioactive. Radioactivity occurs when elemental atoms become unstable due to the loss or gain of additional neutrons; these unstable atoms are referred to as radioactive isotopes. If a cell's nucleus were radioactive it would not last very long, its structure and function would quickly degrade and collapse.
A nucleus that starts to decay is called a radioactive nucleus or atom. It decays with a known and unique half life by several processes including but not limited to beta decay, alpha decay, electron capture decay, and positron emission.
Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.
Radioactive decay is the spontaneous breakdown of a nucleus into smaller parts.
radioactive decay