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Topic: Atom (disambiguation)

	Atom - Wikipedia, the free encyclopedia
		The word atom originally meant the smallest possible indivisible particle, but after the term came to have a specific meaning in science, atoms were found to be divisible and composed of smaller subatomic particles.
		The atomic orbital wavefunctions of a hydrogen atom.
		Atoms are generally classified by their atomic number Z, which corresponds to the number of protons in the atom.
	en.wikipedia.org /wiki/Atom (3978 words)

	Atom - LearnThis.Info Enclyclopedia (Site not responding. Last check: 2007-11-04)
		At the center of the atom is a tiny positive nucleus composed of nucleons (protons and neutrons).
		Atoms having the same atomic number, but different atomic masses (due to their different numbers of neutrons), are called isotopes.
		The simplest atom is the hydrogen atom, having atomic number 1 and consisting of one proton and one electron.
	encyclopedia.learnthis.info /a/at/atom.html (599 words)

	ipedia.com: Atom (disambiguation) Article (Site not responding. Last check: 2007-11-04)
		An atom is the following: Generally, an atom is the smallest irreducible constituent of a chemical system.
		In Prolog, an atom is a specific value, which represents all possible values.
		This is a disambiguation page; that is, one that points to other pages that might otherwise have the same name.
	www.ipedia.com /atom__disambiguation_.html (185 words)

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