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IIIustrate the reaasons for the stabilit...

IIIustrate the reaasons for the stability of completey filled and half -filled subshells .

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Assertion (A) Atoms with completely filled and half-filled subshells are stable. Reason (R ) Completely filled and half filled subshells have symmetrical distribution of electrons and have maximum exchange energy. The correct answers is

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The +3 ion of which one of the following has half filled 4f subshell ?

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-ATOMIC STRUCTURE-Important Questions
  1. Explain Pauli's Exclusion principle with an example.

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  2. What is Aufbau principle ?

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  3. What is Hund's rule ?

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  4. Explain Heisenberg's uncertainty principle .

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  5. What is the wavelength of an electron moving with a velocity of 2.0xx1...

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  6. How many electrons in an atom may have n=4 and m(s)=+(1)/(2) ?

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  7. Explain the significance of Heisenberg's uncertainty principle .

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  8. Show that the circumfernce of the Bohr orbit for the hydrogen atom is ...

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  9. What are the main features of quantum mechanical model of an atom?

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  10. What is a nodal plane ? How many nodal plance are possible for 2p and ...

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  11. How are the quantum numbers n , 1 m(1) for hydrogen atom are obtained...

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  12. Explain the difference between emission and absorpation spectra.

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  13. Explain photoelectric effect on the basis of Einstein theory.

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  14. Explain Rutherford 's nuclear of an atom . What are its drawbacks ?

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  15. What are the postulates of Bohr's model of hydrogen atom ? Discuss the...

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  16. Explain the success of Bohr's theory for hydrogen atom.

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  17. What are the evidence in favour of dual behaviour of electron?

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  18. How are the quantum numbers n , 1 m(1) for hydrogen atom are obtained...

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  19. Define atomic orbital . Explain the shapes of s, p and d orbitals with...

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  20. IIIustrate the reaasons for the stability of completey filled and half...

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