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What atomic number of an element "X" wou...

What atomic number of an element "X" would have to become so that the 4th orbit around X would fit inside the I Bohr orbit of H atom ?

A

3

B

4

C

16

D

25

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NARENDRA AWASTHI-ATOMIC STUCTURE-Exercise
  1. The kinetic and potential energy (in eV) of electron present in third ...

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  2. The distance between 4th and 3rd Bohr orbits of He^(+) is :

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  3. What atomic number of an element "X" would have to become so that the ...

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  4. The ratio of velocity of the electron in the third and orbit of Li^(2+...

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  5. If radius of second stationary orbit (in Bohr's atom) is R then radius...

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  6. Which state of the triply ionized Beryllium (Be^(3+)) has the same orb...

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  7. Select the incorrect graph for velocity of e^(-) in an orbit vs. Z, 1/...

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  8. What is the frequency of revolution of electron present in 2nd Bohr's ...

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  9. According to Bohr's atomic theory, which of the following is correct ?

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  10. Number of waves produced by an electron in one complete revolution in ...

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  11. Which of the following statement does not form part of Bohr's model o...

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  12. What is the separation energy (in eV ) for Be^(3+) in the first excite...

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  13. If in Bohr's model, for unielectronic atom, time period of revolution ...

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  14. Which of the following is discreted in Bohr's theory?

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  15. What is the ratio of time periods (T(1)//T(2)) in second orbit of hydr...

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  16. The mass of an electron is m, charge is e and it is accelerated form r...

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  17. If the ionization energy of He^(+) is 19.6xx10^(-18) J per atom then t...

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  18. The energy of the second Bohr orbit in the hydrogen atom is -3.41eV. T...

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  19. The energy of an electron moving in n^(th) Bohr's orbit of an element ...

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  20. If epsilon(0) be the permittivity of vacuum and r be the radius of orb...

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