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Radioactive atom

Radioactive atom

(Science: chemistry, physics) An atom with an unstable nucleus, which emits particulate or electromagnetic radiation (radioactive emission) to achieve greater stability.

See: radionuclide, half-life, becquerel.


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Question about Carbon 14

Radioactive isotopes (such as C14) usually have too many neutrons relative to the number of ... together. The rate at which they decay is variable but usually gets faster as the atom gets larger. Atoms with a more "balanced" ratio of protons to neutrons (such ...

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by alextemplet
Mon Mar 02, 2009 4:13 am
 
Forum: General Discussion
Topic: Question about Carbon 14
Replies: 1
Views: 332

Simple Protein Question

... look at a chart of amino acids, you will notice that NONE contain the atom of Phosphorus. So is the book wrong when they say that proteins are ... excerpted from the same book: "They tagged bacteriophages with the radioactive isotopes 32P and 35S. Since proteins contain sulfur but not phosphorous ...

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by thewax
Wed Dec 24, 2008 10:44 pm
 
Forum: Molecular Biology
Topic: Simple Protein Question
Replies: 2
Views: 488

help....

... contrast the three domains. Each element consists of a certain kind of atom that is different from the atoms of any other element. An atom is the ... 7 protons, and the most common isotope of nitrogen has 7 neutrons. A radioactive isotope of nitrogen has 8 neutrons. What is the atomic number ...

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by iheartremmy15
Sun Sep 14, 2008 6:29 pm
 
Forum: General Discussion
Topic: help....
Replies: 1
Views: 619

Photorespiration

yes. a radioactive carbon atom will behave similarly with the regular isotope, but you will be able to identify it through its course in ...

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by MrMistery
Sat Jan 12, 2008 10:13 pm
 
Forum: Botany Discussion
Topic: Photorespiration
Replies: 18
Views: 2641

Monkeys??!

C-14: the decay is not linked to sunlight exposure but simply to radioactive reactions. The mechanism is well known and described and depend only on the structure of the atom. Hence the decay rate is constant and known, nothing to be discussed here deadfish. ...

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by canalon
Mon Jun 26, 2006 3:59 pm
 
Forum: Evolution
Topic: Monkeys??!
Replies: 37
Views: 9920


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