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The configuration 1 s^2, 2 s^2 2 p^5, 3 ...

The configuration `1 s^2, 2 s^2 2 p^5, 3 s^1` shows

A

Excited state of `O_2^-`

B

Excited state of neon

C

Excited state of fluorine

D

Ground state of fluorine atom

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The correct Answer is:
B
(b) The ground state of neon is `1 s^2 2 s^2 2 p^2` on excitation an electron from `2 p` jumps to `3 s` orbital. The excited neon configuration us `1 s^2 2 s^2 2 p^5 3 s^1`.
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A2Z-ATOMIC STRUCTURE-Section D - Chapter End Test
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  2. Calculate de Broglie wavelength of an electron travelling at 1 % of th...

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  3. According to Heisenberg's uncertainly principle.

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  4. The correct set of four quantum number for the valence (outermost) ele...

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  5. Which one is the correct outer configuration of chromium.

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  6. Suppose 10^-17 J of energy is needed by the interior of human eye to s...

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  7. How many chlorine atoms can you ionize in the process Cl rarr Cl^+ + e...

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  8. If value of azimuthal quantum number l is 2, then total possible value...

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  9. Elements up to atomic number 103 have been synthesized and studied. If...

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  10. When 3d orbital is complete, the new electron will enter the

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  11. If the radius of the second Bohr of hydrogen atom is r(2) then the ra...

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  12. The configuration 1 s^2, 2 s^2 2 p^5, 3 s^1 shows

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  13. The four quantum number of the valence electron of potassium are.

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  14. Which of the following electronic configuration is not possible accord...

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  15. The number of d electrons in Fe^(2+) (atomic number of Fe = 26) is not...

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  16. The speed of a photon is one hundredth of the speed light in vacuum. W...

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  17. What is the orbit angular momentum of a d electron?

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  18. Electrons revolving around the nucleus do not fall into the nucleus be...

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  19. The cation energy of an electron is largely determined by its principa...

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  20. Statement : wavelength of (I) line of Humphry series is more than (I) ...

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