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Assertion (A) : The electronic configura...

Assertion (A) : The electronic configuration of nitrogen atom is represented as

Reason (R ) : The electronic configuration of the ground state of an atom is the one which has the greatest multiplicity

A

If both (A) and (R ) correct and (R ) is the correct explanation for (A)

B

If both (A) and (R ) correct and (R ) is the correct explanation for (A)

C

If (A) is correct but (R ) is incorrect

D

If (A) is incorrect but (R ) is correct

Text Solution

Verified by Experts

The correct Answer is:
A
According to Hand's rule , pairing cannot take place unit all the orbitals are singkly filled
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CENGAGE CHEMISTRY ENGLISH-ATOMIC STRUCTURE-Exercises Assertion And Reason
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  2. Assertion: The first ionization energy of Be is greater than that of B...

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  3. Assertion (A) : The electronic configuration of nitrogen atom is repre...

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  4. Assertion (A) : The atomic radii of the electrons of oxygen family are...

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  5. STATEMENT-1: For n=3 l may be 0, 1 and 2 and ma may be 0,0+-1,0+-1 and...

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  6. Assertion (A) : An orbital cannot have more than two electrons Reason...

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  7. Assertion (A) : The configuration of B atom cannot be 1s^(2)2s^(3) Re...

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  8. Assertion (A) : The ionisation energy of N is more than that of O Re...

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  9. Assertion (A) : p orbital is dumb- bell shaped Reason (R ) :Electron...

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  10. Assertion (A) : A spectral line will be seen for 2p,-2p transition R...

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  11. Assertion (A) : Ionisation potential of Be (atomic number 4 ) is more ...

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  12. Assertion (A) : In rutherford's gold foil experiment, very few alpha ...

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  13. Assertion (A) : Limiting line is the balmer series ghas a wavelength o...

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  14. Assertion (A) : Each electron in an atom has two spin quantum number ...

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  15. Assertion (A) : There are two spherical nodes in 3s orbital Reason (R...

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  16. Assertion (A) : In an atom, the velocity of electron in the higher orb...

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  17. Assertion (A) : If the potential difference applied to an electron is...

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  18. Assertion (A) :Angular momentum of 1s,2s,3s, ets all have spectrical ...

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  19. Assertion (A) : The radial probability of 1s electrons first increases...

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  20. Assertion (A) : On increasing the internsity of incident radiation, th...

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