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The radius of the smallest electron orbi...

The radius of the smallest electron orbit in the hydrogen like atom is `(0.51xx10^(-10))/4` m, then it is :

A

Hydrogen atom

B

`He^(+)`

C

`Li^(++)`

D

`Br^(+++)`

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The correct Answer is:
D
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MODERN PUBLICATION-UNIT TEST PAPER - NO.8-EXERCISE
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  2. A gas of hydrogen like atoms are in an unknown energy state of princip...

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  3. A gas of hydrogen like atoms are in an unknown energy state of princip...

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  4. A gas of hydrogen like atoms are in an unknown energy state of princip...

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  5. In Rutherford experiment , the number of the alpha particles scattered...

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  6. The radius of the smallest electron orbit in the hydrogen like atom is...

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  7. If the hydrogen atoms are excited to states with principal quantum num...

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  8. A hydrogen atom in the ground state absorbs 12.09 eV of energy . The c...

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  9. A hydrogen-like atom has one electron revolving around a stationary nu...

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  10. When the electron jumps from a level n=4 to n=1, momentum of the recoi...

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  11. In the case of forward biasing of p - n junction , which one of the fo...

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  12. In a common emitter amplifier output resistance is 5000 ohm and input ...

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  13. The current gain of a transistor is 100. If the base current changes b...

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  14. radioactive nucleus X undergoes a series of decays corroding to the sc...

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  15. Statement I : Half life for certain radioactive element is 5 min . Fou...

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  16. Statement I : When light of a given intensity falls on a surface is in...

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  17. Hydrogen (H), deuterium (D), singly ionized helium (He^(+)) and doubly...

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  18. A nucleus containing Z protons and N neutrons has a mass M . If the ma...

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  19. In extrinsic germanium crystal, the holes are provided by :

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  20. A triode value has mutual conductance of 2 xx10^(-3) mho . If the grid...

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