2006-10-18 14:28:05 · 4 answers · asked by WTC 04 1 in Education & Reference ➔ Homework Help
The unified scale based on carbon-12, 12C, met the physicists' need to base the scale on a pure isotope, while being numerically close to the old chemists' scale.
2006-10-18 14:36:04 · answer #1 · answered by alex's mummyc 2 · 0⤊ 0⤋
Carbon-12. The atomic mass unit is defined as 1/12 of the mass of the neutral carbon-12 atom. Due to nuclear binding energies, this is not exactly the same as the mass of the hydrogen atom (though quite close).
2006-10-18 14:36:48 · answer #2 · answered by First L 2 · 0⤊ 0⤋
Once upon a time CARBON was the standard which all other elements were in relation. However, science is more exacting and they are now all on their own, so to speak.
. . . and if you didn’t know, now you do . . .
Get an "A".
2006-10-18 14:38:46 · answer #3 · answered by teachr 5 · 0⤊ 0⤋
none.. it combines the weight of the protons and the electrons..
if that is completely wrong then hydrogen...
2006-10-18 14:32:39 · answer #4 · answered by Anonymous · 0⤊ 0⤋