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In which of the following systems will t...

In which of the following systems will the radius of the first orbit (n=1) be minimum ?

A

Hydrogen atom

B

Doubly ionized lithium

C

Singly ionized helium

D

Deuterium atom

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The correct Answer is:
B
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SURA PUBLICATION-NUCLEAR PHYSICS-ADDITIONAL QUESTIONS & ANSWER (FILL IN THE BLANKS)
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  2. In the Bohr model of a hydrogen atom, the centripetal force is furnish...

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  3. In which of the following systems will the radius of the first orbit (...

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  4. In which of the following systems will be the radius of the first orbi...

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  5. was the first chairman of the Atomic Energy Commission of India.

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  6. An electron changes its position from orbit n=2 to the orbit n=3 of an...

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  7. When hydrogen atom is in it's first excited level, its radius is it's...

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  8. In the Bohr's hydrogen atom model, the radius of the stationary orbit ...

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  9. When a hydrogen atom is raised from the ground state to an excited sta...

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  10. The radius of hydrogen atom in it's ground state is 5.3 × 10^-11 m. Af...

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  11. The radius of hydrogen atom in it's ground state is 4 × 10^-13 m. Afte...

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  12. The radius of hydrogen atom in it's ground state is 0.1 × 10^-7 m. Aft...

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  13. In the Bohr's hydrogen atom model, the radius of the stationary orbit ...

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  14. In the Bohr's hydrogen atom model, the radius of the stationary orbit ...

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  15. The energy required to knock out the electron in the fifth orbit of a ...

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  16. The energy required to knock out the electron in the seventh orbit of ...

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  17. In terms of Bohr radius a0, the radius of the second Bohr orbit of a h...

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  18. The ionization energy of hydrogen atom is 13.6 eV. Following Bohr's th...

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  19. The elements whose atomic number is more than 83 undergo radioactivit...

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  20. Most of the radioactive elements are and metals.

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