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If the nitrogen atom had electronic conf...

If the nitrogen atom had electronic configuration is `1s^7`, it would have energy lower than that of the normal ground state configuration `1s^2 2s^2 2p^3` because the electrons would be closer to the nucleus. Yet `1s^7` is not observed. It violates:

A

Hund's rule

B

Heisenberg's uncertainty principle

C

Pauli's exclusion principle

D

Bohr postulate of stationary orbits

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The correct Answer is:
C
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MBD PUBLICATION-STRUCTURE OF ATOM-QUESTION TYPE
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  2. Identify the least stable among the following

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  3. If the nitrogen atom had electronic configuration is 1s^7, it would ha...

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  4. List the quantum numbers (n and l) of electrons for 3d-orbital.

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  5. Which quantum number specifies the shape of an orbital in an atom ?

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  6. What is the value of e/m for an electron ?

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  7. How many unpaired electrons are there in Ni^(2+) ion ?

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  8. Differentiate between proton and photon.

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  9. State Pauli's exclusive principle.

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  10. What is the mass of proton in kilograms ?

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  11. Write the electronic configuration of Cu^(2+) ion.

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  12. Write the electronic configuration of the atom having atomic number 29...

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  13. How many protons and neutrons are present in 15^(P^31) ?

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  14. Write the electronic configuration of an element atomic number 24 ?

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  15. Calculate the total charge in a mole of electron.

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  16. Give the electronic configuration of an element of Gr IB of 4th period...

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  17. Write the quantum number of an electron present in 3p-orbital.

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  18. The atom of which element has no neutron in its nucleus ?

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  19. Give electronic configuration of chlorine atom.

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  20. Give the de Broglie equation.

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