How does the magnetic behaviour of 3rd row transition elements differ from the elements of first and second row transition series? Explain with suitable example.
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Third row of transition elements has more magnitude of the magnetic moment due to unpaired electrons.
Explanation:
- The magnetic behavior of the electron is generated due to orbital and spin motion of electron about its own axis.
- Electron is a charged particle and it's spinning produces the magnetic field.
- An unpaired electron is more vulnerable to interact with the applied magnetic field.
- Therefore the third row of transition elements has more unpaired electrons as compared to the first and second row.
- Therefore third row of transition elements has more magnitude of the magnetic moment.
- Nb and Tc both have a half-filled 5 s sub shell.
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