Home
Class 12
CHEMISTRY
The electronic transitions from n=2 to n...

The electronic transitions from n=2 to n =1 will produce shortest wavelength in (where n= principle quantum state)

A

` Li^(+2) `

B

` He^(+) `

C

` H`

D

` H^(+) `

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2010

    WB JEE PREVIOUS YEAR PAPER|Exercise CHEMISTRY|45 Videos

  • QUESTION PAPER 2012

    WB JEE PREVIOUS YEAR PAPER|Exercise Subject: Chemistry|41 Videos

Similar Questions

Explore conceptually related problems

The electronic transition from n=2 to n=1 will produce shortest wavelength in (where n=principal quantum state)-

The electronic transition from n=2 to n=1 will produce shortest wavelength in (where n= principal quantum number)

(1) Show that the sum of energies for the transition from n=3 to n=2 and from n=2 to n=1 is equal to the energy of transition from n=3 to n=1 in case of an H-atom. (2) Are wavelength and frequencies of the emitted spectrum also additive as their energies?

The electron in a hydrogen atom makes a transition n_1 to n_2 , where n_1 and n_2 are the principal quantum numbers of the two states. According to the Bohr model , the time period of revolution of electron in initial state is 8 times that in the final state. Which are possible values of n_1 and n_2 ? A 4,2 , B 8,2 , C 8,1 ,D 6,3 .

No of Subshell under principle quantum no 'n' :

Electron in a hydrogen atom undergoes transition from n_1 to n_2 , where n_1 and n_2 are the principal quantum numbers of two given states. According to Bohr's theory , if the time period of the electron in the initial state be eight times that in the final state , the possible values of n_1 and n_2 will be, respectively

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . For what wavelength of incident radiation He^+ ion will be raised to fourth quantum state from ground state?

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(-13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . (i)What is the wavelength of the light incident on the atom to raise it to the fourth quantum level from ground state ?

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(-13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . The wavelength of radiation emitted for the transition of the electron of He^+ ion from n=4 to n=2 is

H, He^(+), Li^(2+) are examples of atoms or ions with one electron each . The energy of such atoms when in the n-th energy state (according to Bohr,s theory , n=1,2,3…. =principal quantum number ) is E_n =(-13.6 Z^2)/(n^2) eV (1 eV =1.6xx10^(-19)J) . For the ground state ,n=1 . in order to raise the atom from the ground state to n=f , the suitable incident light should have a wavelength given by lambda=(hc)/(E_f-E_1) . But the atom cannot stay permanently in the f-energy state, ultimately , it comes to the ground state by radiating the extra energy , E_f-E_1 as electromagnetic radiation . The electron of the atom comes from n=f to n=1 in one or more steps using the permitted energy levels . As a result there is a possibility of emission of radiation with more than one wavelength from the atom. Planck's constant =6.63 xx10^(-34)J*s and velocity of light c=3xx10^(8)m*s^(-1) . Energy of which quantum state of He^+ ion will be equal to the ground level energy of hydrogen ?

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2011-CHEMISTRY
  1. An electric current is passed through an aquous solution of a mixture ...

    Text Solution

    |

  2. The representation of the ground state electronic configuration of He...

    Text Solution

    |

  3. The electronic transitions from n=2 to n =1 will produce shortest wav...

    Text Solution

    |

  4. In the following electron dot structure , calculate the formal charge ...

    Text Solution

    |

  5. If the molecular wt.of Na2S2O3 and I2 " are" M1 and M2 respectively...

    Text Solution

    |

  6. A radioactive atom (Y)^(X) M emits two alpha particles and one be...

    Text Solution

    |

  7. An element belongs to Group 15 and third period of the periodic tab...

    Text Solution

    |

  8. Which one of the following is paramagnetic?

    Text Solution

    |

  9. Platinum, Palladium and Iridium are called noble metals because.

    Text Solution

    |

  10. Which one is not a constituent of nucleic acid?

    Text Solution

    |

  11. The sp^(3) d^(2) hybridization of central atom of a molecule woul...

    Text Solution

    |

  12. In aqueous solutions glucose remains as

    Text Solution

    |

  13. Which of the following is used to prepare Cl2 gas at room temperatu...

    Text Solution

    |

  14. NO2 is not obtained on heating

    Text Solution

    |

  15. Two aromatic compounds having formula C7H8O which are easily identi...

    Text Solution

    |

  16. The ease of dehydrohalogenation of alkyl halide with alcoholic KOH i...

    Text Solution

    |

  17. The ease of Nitration of the following three hydrocarbones follows th...

    Text Solution

    |

  18. The correct order of decreasing acidity of nitrophenols will be

    Text Solution

    |

  19. Among the alkenes which one produces tertiary butyl alcohol on acid ...

    Text Solution

    |

  20. Which of the following compounds has maximum voltaility ?

    Text Solution

    |