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Topic: Symbol change: Lawrencium  (Read 5376 times)

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Offline minithin

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Symbol change: Lawrencium
« on: August 24, 2006, 09:19:02 PM »
Lw was the original symbol for Lawrencium. It was later changed to Lr. We were talking about this at work today... does anyone here know why this change was made?

Thank you!!

-mini
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Offline Winga

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Re: Symbol change: Lawrencium
« Reply #1 on: August 24, 2006, 10:29:57 PM »
I have an old book (1978), the symbol has been using Lr since at least 1978.
So, when did it change?   
« Last Edit: August 25, 2006, 03:47:14 AM by Winga »
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Offline pantone159

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Re: Symbol change: Lawrencium
« Reply #2 on: August 25, 2006, 02:04:02 AM »
My copy of "Man-Made Tranuranium Elements", by Glenn T. Seaborg, copyright 1963, uses Lw.

I have no idea why it was changed, however.
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Offline Winga

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Re: Symbol change: Lawrencium
« Reply #3 on: August 25, 2006, 03:57:26 AM »
I think IUPAC preferred Lr to Lw as Lw was only a sugguesting symbol.
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Offline minithin

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Re: Symbol change: Lawrencium
« Reply #4 on: August 25, 2006, 11:46:54 AM »
according to the mighty wikipedia, Lw was changed to Lr in 1963 and was ratified by IUPAC in 1997

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