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Which electronic level would allow the h...

Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon?

A

1s

B

3s

C

2p

D

3d

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The correct Answer is:
A
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AAKASH INSTITUTE ENGLISH-MOCK TEST 4-Example
  1. which of the following orbitals has three angular nodes?

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  2. the current statement on the Aufbau principle is that

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  3. Which electronic level would allow the hydrogen atom to absorb a photo...

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  4. the orbital angular momentum of 4f electron is

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  5. Among V(Z=23), Cr(Z=24), Mn(Z=25) and Fe(Z=26), which will have the hi...

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  6. for 3d(z^2) orbital the value of l and m respectively are

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  7. in presence of external magnetic field, f subshell is

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  8. Psi420 represents

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  9. in an atomic orbital the sign of lobes indicate the

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  10. the orbital diagram in which aufbau principal is violated is :

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  11. The energy of an electron in an atomic orbital of a multi electron ato...

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  12. d- orbital with maximum electron density along two axes will be

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  13. the correct electronic configuration of Cu^(2+) ion is

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  14. In a set of degenerate orbitals, the electrons distribute themselves t...

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  15. the ground state electronic configuration of chromium can be written a...

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  16. considering the electron of outermost orbital of CU match the items gi...

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  17. among the following series of transition metal ions, the one where all...

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  18. Among the following representations of excited states of atoms which i...

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  19. Out of the following the correct statement(s) is/are , (a) Number of s...

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  20. the number of d electrons in Co is equal to that of

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