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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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Could anyone please help with these questions? (Bio)

If anyone could please help I would greatly appreciate it! Thanks :D Radioactive Isotopes A. Are electrically unbalanced B. Behave the same chemically ... A. Salt B. Carbohydrate C. Carbon D. Sugar E. Methane The negative subatomic particle is the A. Neutron B. Proton C. Electron D. A and B E. B and ...

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by lindshastude
Tue May 01, 2012 3:50 pm
Forum: General Discussion
Topic: Could anyone please help with these questions? (Bio)
Replies: 1
Views: 8389

AIDS – a tritium disease?

... RNA, proteins and other like hydrogen. The likelihood one penetrated atom to “blast” in the course of 12 years is 50%. Depending on that where ... the harms to a given organism can be very heavy. Unlike the heavy radioactive isotopes, it is not found easily, and it penetrates without a ...

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by enarees
Tue Feb 22, 2011 6:08 am
Forum: Human Biology
Topic: AIDS – a tritium disease?
Replies: 23
Views: 15878

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: 1851

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: 5296


... 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: 3684
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