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According to Aufbau principle , the 19^(...

According to Aufbau principle , the `19^(th)` electron in an atom goes into the :-

A

4s - orbital

B

3d - orbital

C

4p - orbital

D

3p - orbital

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ALLEN-Atomic Structure-All Questions
  1. According to Bohr's atomic model

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  2. A subshell with n=6 , l= 2 can accommodate a maximum of

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  3. According to Aufbau principle , the 19^(th) electron in an atom goes i...

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  4. Which of the d orbitals lies in the xy-plane ?

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  5. Which of the following sub - shells is not permitted ?

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  6. The ratio of radii of first orbits of H, He^(+) and Li^(2+) is:

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  7. The line with smallest wavelength in the Balmer series in the hydrogen...

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  8. The ionisation energy of H is 13.6 eV. Calculate the ionization energy...

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  9. The two paricles A and B have de Broglie wavelengths 1 nm and 5 nm res...

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  10. For an element , if atomic number (Z) and mass number (A) are 29 and 6...

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  11. Among the following groupings which represents the collection of isoel...

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  12. The specific charge of a proton is 9.6xx10^(7)"C kg"^(-1). The speci...

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  13. It is known that an atom contains protons, neutrons and almost electro...

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  14. The energy of a 700- nm photo is :-

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  15. One energy difference between the states n = 2 and n= 3 is "E eV", in ...

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  16. Which of the following statements (regarding an atom of H ) are correc...

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  17. The ionisation potential of hydrogen atom is 13.6 volt. The energy req...

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  18. When the electron of a hydrogen atom jumps from the n=4 to the n=1 s...

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  19. An electron in an atom jumps in such a way that its kinetic energy cha...

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  20. Which orbital notation does not have spherical node?

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