VRD--What element was used before carbon12 as the standard for atomic mass?

Subject: VRD--What element was used before carbon12 as the standard for atomic mass?

Date: Mon Feb 19 12:21:42 2001
Posted by Jessica
Grade level: School: No school entered.
City: No city entered. State/Province: No state entered. Country: No country entered.
Area of science: Chemistry
ID: 982603302.Ch

Message:


What element was used before carbon12 as the standard for atomic
>mass and what year was the transition?
>
>Jessica
>

Re: VRD--What element was used before carbon12 as the standard for atomic mass?

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