Re: Need help for painting the periodic table



On Wed, 01 Jun 2005 08:58:57 +0200, Wilco Oelen <photo@xxxxxxxxx> wrote:

Why this is the case cannot be explained in simple layman terms,
quantum mechanics computations are needed to understand this.

To add my $.02 to Wilco explanation: the only real answer to the question "why" is "because that's the way it is".

Unexcited electron configuration is always the one with the lowest
energy. When you do the quantum calculations you will find out which
configuration has the lowest energy. Asking 'why this particular
configuration' in most cases doesn't make sense, as you will soon
land in the land of exceptions, exceptions to exceptions and
exceptions to exceptions to exceptions.

Welcome to chemistry ;)

Best,
Borek
--
http://www.chembuddy.com - chemical calculators for labs and education
BATE - Base Acid Titration and Equilibria
program for pH calculations
CASC - Concentration and Solution Calculator
program for solution preparation and concentration conversions
.



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