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because of S.L coupling

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Q: Why atoms having even number of electrons show only normal Zeeman effect?
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Differences between anomalous zeeman effect and normal?

normal zeeman effect occurs in strong magnetic field while anamolous zeeman effect occur in weak magnetic field


What does zeeman effect mean?

The splitting of single spectral lines of an emission or absorption spectrum of a substance into three or more components when the substance is placed in a magnetic field. The effect occurs when several electron orbitals in the same shell, which normally have the same energy level, have different energies due to their different orientations in the magnetic field. A normal Zeeman effectis observed when a spectral line of an atom splits into three lines under a magnetic field. An anomalous Zeeman effectis observed if the spectral line splits into more than three lines. Astronomers can use the Zeeman effect to measure magnetic fields of stars. Compare Stark effect.


Which electrons are involved in normal chemical reactions?

The valence electrons.


Is it normal for a women to start her period a week later after having intercourse?

Yes, this is normal. Intercourse doesn't effect menstruation at all so it has no relation to your period, when your period starts is dependent on your menstrual cycle - sex doesn't effect this.


How do electrons from beta particles emission differ from electrons in a normal atoms?

The energy is different.


What effect is the greenhouse effect having on your planet?

The normal greenhouse effect keeps the planet, and us, warm.the enhanced greenhouse effect, which we are having now, is causing global warming and climate change.This is happening because of our burning of fossil fuels(coal, oil and natural gas) and deforestation (cutting down trees which previously removed carbon dioxide (CO2) from the atmosphere).


Is never having pre-ejaculate normal?

Not having pre-ejaulate ("pre-cum") is perfectly normal, having none, a lot or a little are all normal.


Is 2 protons 2 neutrons and 2 electrons normal?

It is normal for the isotope of the element helium. 2He4 isotope has 2 protons, 2 neutrons and 2 electrons.


What is a normal atom?

Its a normal atom if it have same protons, neutrons, and electrons to the one of the periodic table. If it have more or less neutrons than normal then its an isotope. If it have more protons than electrons then its a positive ion. If it have more electrons than protons then its a negative ion. An ion its a charged atom, more or less electrons than " normal " Isotopes its an atoms with the same number of protons, but different number of neutrons.


In a normal atom how many electrons are there compared to protons?

In a "normal" atom, the number of electrons equal the number of protons. Many atoms, however, have missing or extra electrons, giving these atoms positive or negative charges, which we call ions.


How do the number of protons and electrons compare in a normal atom?

They are equal


Do atoms gain electrons?

Yes, it is normal - in reduction reactions.