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We must first consider the forces between electrons and nature of the
Helium- will have 2+ charge.
if they have 1 e-, it will be
extremely difficult to remove.
pulled by 2 protons.
regular helium- pulled in by 2 p
2 e- are repellent also at
the same time. ion is more
lethium 3+ charge. repulsion
is also there b/w electrons.
if u remove two from Le.
electron is difficult to remove.
core electrons are the ones
which r difficult to remove. 14 05-Sep-13 Polyelectronic atoms – 3 energy
(momentum) • The kinetic energy of moving electrons
• The potential energy of the attraction between the nucleus
and the electrons.
• The potential energy from repulsion of electrons
in an atom • Each electron is affected by the attraction of the nucleus
and the repulsion of the electrons, which leads to an
effective nuclear charge (___________________)
• Zeff is the net ________________ charge experienced (or
‘perceived’) by an e- in a multi-electron atom.
• We can use Zef...
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