When the electron in the hydrogen atom jumps from 2nd orbit to 1st orbit, the wavelength of radiation emitted is λ. When the electrons jump from 3rd orbit to 1st orbit, the wavelength of emitted radiation would be

 
(1) 2732λ             

(2) 3227λ

(3) 23λ               

(4) 32λ

Subtopic:  Spectral Series |
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Which of the following transition will have shortest emission wavelength ?

(1) n = 2 to n =1           

(2) n = 1 to n = 2 

(3) n = 2 to n = 5         

(4) n = 5 to n = 2 

Subtopic:  Spectral Series |
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If the binding energy of the electron in a hydrogen atom is 13.6 eV, the energy required to remove the electron from the first excited state of Li++ is 

(1) 122.4 eV       

(2) 30.6 eV

(3) 13.6 eV         

(4) 3.4 eV

Subtopic:  Bohr's Model of Atom |
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Which state of triply ionised Beryllium Be+++ has the same orbital radius as that of the ground state of hydrogen

(1) n = 4                 

(2) n = 3

(3) n = 2                 

(4) n = 1

Subtopic:  Bohr's Model of Atom |
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The ratio of areas within the electron orbits for the first excited state to the ground state for hydrogen atom is

1. 16 : 1             

2. 18 : 1

3. 4 : 1               

4. 2 : 1

Subtopic:  Bohr's Model of Atom |
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Taking Rydberg’s constant RH=1.097×107 m first and second wavelength of Balmer series in hydrogen spectrum is

(1) 2000 Å, 3000 Å                 

(2) 1575 Å, 2960 Å

(3) 6529 Å, 4280 Å                 

(4) 6552 Å, 4863 Å

Subtopic:  Spectral Series |
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The kinetic energy of electron in the first Bohr orbit of the hydrogen atom is 

(1) – 6.5 eV               

(2) – 27.2 eV

(3) 13.6 eV               

(4) – 13.6 eV

Subtopic:  Bohr's Model of Atom |
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In Bohr’s model of hydrogen atom, which of the following pairs of quantities are quantized 

(1) Energy and linear momentum

(2) Linear and angular momentum

(3) Energy and angular momentum

(4) None of the above

Subtopic:  Bohr's Model of Atom |
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The energy of the highest energy photon of Balmer series of hydrogen spectrum is close to
(1) 13.6 eV             

(2) 3.4 eV

(3) 1.5 eV               

(4) 0.85 eV

Subtopic:  Spectral Series |
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Which one of the relation is correct between time period and number of orbits while an electron is revolving in a orbit

(1) n2             

(2) 1n2

(3) n3             

(4) 1n

Subtopic:  Bohr's Model of Atom |
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