Ionisation enthalpies

Ionisation enthalpies - Factbites
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Topic: Ionisation enthalpies

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	Physical & Chemical Properties: E
		Handbook of antioxidants : bond dissociation energies, rate constants, activation energies, and enthalpies of reactions.
		Ionisation constants of organic acids in aqueous solution.
		Dissociation constants of organic bases in aqueous solution.
	chemistry.library.wisc.edu /properties/properties_e.htm (415 words)

	Electronic Structure
		A plot of the first Ionisation Enthalpies of the successive elements (e.g.
		Evidence of sub-divisions with Principal Quantum Levels is suggested by the small 'unexpected' decrease in first I.E. in going from, for example, Be to B, and also from N to O. This plot also illustrates periodicity amongst the elements.
		The Quantum Theory page refers to the Principal Quantum Number, n, arising from a solution of the Schrödinger equation, and the quantised nature of electrons in atoms.
	www.avogadro.co.uk /light/e-config.htm (415 words)

	Transition metal -- Facts, Info, and Encyclopedia article
		However a transition element like (A soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite) vanadium has roughly linear increasing ionisation enthalpies throughout its s and d orbitals, due to the close energy difference between the 3d and 4s orbitals.
		Compared to Group II elements such as (A white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals) calcium, transition elements form ions with a wide variety of oxidation states.
		(loosely defined) transition metals are the forty chemical elements 21 to 30, 39 to 48, 71 to 80, and 103 to 112.
	www.absoluteastronomy.com /encyclopedia/t/tr/transition_metal.htm (1406 words)

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Topic: Ionisation enthalpies

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In the News (Tue 17 Nov 09)