Home
Class 12
CHEMISTRY
If n=2 for He^(+) ion than find out the ...

If n=2 for `He^(+)` ion than find out the wave length

A

3.33 Å

B

6.42 Å

C

1.47 Å

D

2.37 Å

Text Solution

Verified by Experts

The correct Answer is:
A
`2pir=nlamda`
`2pixx0.529xx(n^(2))/(Z)=nlamda`
`lamda=(2pixx0.529xxn^(2))/(nxxZ)`
`lamda=(2xx3.14xx0.529xx2^(2))/(2xx2)`
`lamda=3.33`Å
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2019 25 MAY EVENING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|17 Videos

  • AIIMS 2019 26 MAY EVENING SHIFT

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|31 Videos

Similar Questions

Explore conceptually related problems

A hypothetical electromagnetic wave is shown in figure. Find out the wavelength of the radiation.

[" The ratio of wave numbers associated with "],[" longest wave length of Paschen series for "Li^(2+)],[" ion to the shortest wavelength of Brackett series "],[" of H-atom would be."]

Calculate the number of waves made by a Bohr electron in one complete revolution in nth orbit of He^(+) ion, if ratio of de-Broglie wavelength associated with electron moving in n^(th) orbit and 2^(nd) orbit is 2.0 :-

The electronic transition from n = 2 to n = 1 will produce shortest wave length in (where n = principle quantum state)

The transiton in He^(+) ion that will have the same wave number as the first line of lyman series of hydrogen will be

In hydrogen spectrum shortest wave length for lyman series line is lamda , then find the longest wavelength of Balmer series line in He^+ ion spectrum

Find e/m for He^(2+) ion and compare with that for electron.

A hydrogen -like ion He^(o+) (Z = 2) is expased to electromagnetic waves of 256.4 Å The excited electron gives out induced radiation .Find the wavelength of the induced radiation when the electron de-excetes back to the ground state (R = 109677 cm^(-1))

The first excitation potential of He^(+) ion is n , and the ionization potential of Li^(++) ion is the m then find out value of (m)/(n)

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2019 25 MAY MORNING SHIFT-CHEMISTRY
  1. Find out time period of Ist order reaction. When reaction complete (2)...

    Text Solution

    |

  2. The vapour pressure of pure CHCl(3) and CH(2)Cl(2) are 200 ad 41.5 atm...

    Text Solution

    |

  3. If n=2 for He^(+) ion than find out the wave length

    Text Solution

    |

  4. Second group anions reacts with

    Text Solution

    |

  5. Correct order of bond dissociation energy

    Text Solution

    |

  6. When Ag+ reacts with excess of sodium-thio sulphate then the obtained ...

    Text Solution

    |

  7. The correct relation is

    Text Solution

    |

  8. Which of the following has max. solubilitty at low pH?

    Text Solution

    |

  9. Which of the following is correct order of packing efficiency?

    Text Solution

    |

  10. Find empirical formula of the compound if M=68% (atomic mass=34) and...

    Text Solution

    |

  11. Which of the following is a formula of methanides: (a) Be(2)C (b) ...

    Text Solution

    |

  12. Which of the following inert gas paerticipate in chemical reaction.

    Text Solution

    |

  13. The hybridisation and magnetic behaviour of complex [Ni(CO)(4)] is:

    Text Solution

    |

  14. The tetrahedral voids are present in 0.5 mole of hcp crystal structure...

    Text Solution

    |

  15. Which element can have oxidation state from 4 to 6?

    Text Solution

    |

  16. Which of the following statement is incorrect abou colloidal solution.

    Text Solution

    |

  17. On heating hydrazoic acid form

    Text Solution

    |

  18. Assertion: ZnO becomes yellow when it is heated. Reason: The anionic...

    Text Solution

    |

  19. Assertion: The graph between P V/s (1)/(V) is a straight line. Reaso...

    Text Solution

    |

  20. Assertion: Yb^(+2) is more stable in compare to Gd^(+2) Reason: The ...

    Text Solution

    |