Re: Bohr's Atom still number one

bz (bz+spr@xxxxxxxxxxxxxxxxxxxx) writes:
The_Man <me_so_horneeeee@xxxxxxxxx> wrote in
[...]
Core electrons travel at approximately c/ Z, where Z is the
nuclear charge. When Z gets large, the speed of the electrons becomes
sufficiently close to c, so that relativistic effects become very
important.

Are such effects observed? Wouldn't the atomic mass be effected?

[...]
I don't think the velocity is ~c/Z (proportional to sqrt (Z) maybe), but
relativistic effects are observed, though usually rather subtle. They
influence the energy levels of heavy atoms (where the core, high-Z effect
is important) and, I seem to recall, are responsible for gold being yellow.

--John Park
.

Relevant Pages

  • Re: Bohrs Atom still number one
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  • Re: Bohrs Atom still number one
    ... Effects are observed in the chemistry of the very heavy elements. ... has distrinct properties as a result of relativistic effects. ... The velocity of inner (core) electrons is roughly100*Z/c, ...
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