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STATEMENT-1: An orbital cannot have more...

STATEMENT-1: An orbital cannot have more then two electrons and they must have opposite spins.
STATEMENT-2: No two electrojns in an atom can have same set of all the four quantum numbers as per Pauli's exclusion principle.

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ICSE-STRUCTURE OF ATOM-Review Exercises
  1. Explain what is meant by quantisation of energy.

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  2. Which of the following are quantised?

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  3. A hydrogen atom in the ground state. To which level will it get excite...

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  4. Calculate the wavelength of the spectral line when an electron jumps f...

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  5. Calculate the ionisation energy of He^(+) if that of H atom is 13.6eV.

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  6. What nature of electron is indicated by each of the following properti...

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  7. Using Heisenberg's uncertainty principle, calculate the uncertainty in...

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  8. A body of mass 70 kg travels with a speed of 15 km/hour. Calculate the...

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  9. Using s, p, d, f notations describe the orbitals with the following qu...

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  10. Designate the electrons with the following sets of quantum numbers : ...

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  11. STATEMENT-1: An orbital cannot have more then two electrons and they m...

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  12. Explain why can more than 8 electrons not be accommodated in L shell?

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  13. Which of the following sets of quantum numbers do not belong to 2p sub...

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  14. Show the arrangement of electrons by block diagrams in the following s...

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  15. How many electrons possess anticlockwise spin in an atom of oxygen?

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  16. How many electrons are unpaired in (i) He ? (ii) C? (iii) N? (iv) ...

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  17. Why is 4s orbital filled before the filling of 3d orbital?

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  18. Write the names and electronic configurations of the elements in which...

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  19. Why does chromium have configuration of type 3d^(5) 4s^(1) instead of ...

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  20. Does the filling of an orbital by electrons mean that orbitals are som...

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