Home
Class 12
CHEMISTRY
The ratio of radii of first orbits of H,...

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

A

`1 : 2 : 3`

B

`6 : 3 : 2`

C

`1 : 4 : 9`

D

`9 : 4 : 1`

Text Solution

Verified by Experts

The correct Answer is:
2
Promotional Banner

Topper's Solved these Questions

  • ALKYL AND ARYL HALIDE

    ALLEN|Exercise EXERCISE-05 (B)|37 Videos

  • BASIC INTRODUCTION AND NOMENCLATURE

    ALLEN|Exercise MCQ|12 Videos

Similar Questions

Explore conceptually related problems

Correct order of radius of the first orbit of H, He^+, Li^(2 +), Be^(3 +) is :

Calculate ratio of radius of 1 ^(st) orbit of H atom to Li ^(+2) ion :

The ratio of radii of the first three Bohr orbits is

The ratio of the fifth orbit of He^("Theta") and Li^("Theta") will be

The ratio of radius of first orbit in hydrogen to the radius of first orbit in deuterium will be :

Ratio of radii of second and first Bohr orbits of H atom

The ratio of radii of first shell of H atom and that of fourth shell of He^(+) ion is

The radii of the first Bohr orbit of H (r_H), He^+ (r_(He^+)) and Li^(2+) (r_(Li)^(2+)) are in the order

ALLEN-Atomic Structure-All Questions
  1. Which of the d orbitals lies in the xy-plane ?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. Which orbital notation does not have spherical node?

    Text Solution

    |

  18. In how many elements does the electron have the quantum number of n =...

    Text Solution

    |

  19. For principle quantum number n = 4, the total number of orbitals havin...

    Text Solution

    |

  20. Choose the wrong one on the basis of Bohr 's theory :-

    Text Solution

    |