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The configuration 1s^(2) 2s^(2) 2p^(5) 3...

The configuration `1s^(2) 2s^(2) 2p^(5) 3s^(1)` shows

A

ground state of fluorine

B

excited state of fluorine

C

excited state of neon

D

excited state of `O_(2)^(-)`ion

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The correct Answer is:
C
Represents the excited state of neon.
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DINESH PUBLICATION-STRUCTURE OF ATOM-Competitive Examinations
  1. Derive an expression for the de Broglie relationship.

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  2. The number of spherical nodes for 4d orbital is :

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  3. The configuration 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows

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  4. The electronic configuration of Cu^(2+)ion is :

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  5. Which of the following orbitals have a dumb bell shape?

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  6. The total number of orbitals in a shell having principal quantum n ...

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  7. Bohr's radius for the H-atom (n =1) is approximately 0.53 Ã…. The ra...

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  8. The species which is not paramagnetic among the following is

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  9. What is the wavelength of light . Given energy =3.03xx10^(-19)J, h=6.6...

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  10. The following quantum numbers are possible for how many orbitals (s) n...

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  11. Azimuthal quantum number defines.

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  12. The correct orders of increasing energy of atomic orbitals is

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  13. Isoelectronic species are :

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  14. Quantum numbers n=2, l=1 represent :

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  15. The quantum numbers 'm' of a free gaseous atom is associated with :

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  16. The value of Planck's constant is 6.63 xx 10^(-34)Js. The velocity of ...

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  17. For principal quantum number, n = 4, the toal number of orbitals havin...

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  18. The energy of second Bohr orbit of the hydrogen atom is - 328 k J mol^...

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  19. The orientation of an atomic orbital is governed by :

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  20. What is the maximum number of electron in an atom that can have the qu...

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