The maximum number of emission lines obtained when the excited electron of the H atom jumps from n = 6 to the ground state is -

1. 30

2. 21

3. 15

4. 28

Subtopic:  Hydrogen Spectra |
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The ratio of the wavelengths of the last lines of the Balmer to Lyman series is

1. 4:1 2. 27:5
3. 3:1 4. 9:4
Subtopic:  Hydrogen Spectra |
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The wavelength of the radiation emitted when in a H atom, the electron falls from infinity to stationary state (n=1), is:

1. 15 nm

2. 192 nm

3. 406 nm

4. 91 nm

Subtopic:  Hydrogen Spectra |
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 When an electron jumps from n=5 to n=1 in a hydrogen atom, the number of spectral lines obtained is 

1. 3 2. 4
3. 6 4. 10
Subtopic:  Hydrogen Spectra |
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The energy associated with the fifth orbit of a hydrogen atom is :

1. -2.18 × 10-18 J
2. -8.72 × 10-20 J
3. -3.88 × 10-21 J
4. -8.72 × 10-19 J

Subtopic:  Hydrogen Spectra |
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The wavelength of light emitted when the electron in a H atom undergoes the transition from an energy level with n = 4 to an energy level with n = 2, is :

1. 586 mm

2. 486 nm

3. 523 nm

4. 416 pm

Subtopic:  Hydrogen Spectra |
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The transition in the hydrogen spectrum that would have the same wavelength as Balmer transition from n = 4 to n = 2 of He+ spectrum is -

1. n1 = 3 to n2 = 4

2. n2  = 3 to n1 = 2

3. n2  = 3 to n1 = 1

4. n2  = 2 to n1 = 1

Subtopic:  Hydrogen Spectra |
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The electronic transition in the hydrogen atom that emits maximum energy is:

1. 2  1

2. 1  4

3. 4  3

4. 3  2

Subtopic:  Hydrogen Spectra |
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The maximum wavelength in the Lyman series of He+ ion is-

1. 3R

2. 1/3R

3. 1/R

4. 2R

Subtopic:  Hydrogen Spectra |
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Emission transitions in the Paschen series end at orbit n = 3 and start from orbit n and can be represented as v = 3.29 × 1015 (Hz)132- 1n2The value of n if the transition is observed at 1285 nm is :

1. 6 2. 5
3. 8 4. 9

Subtopic:  Hydrogen Spectra |
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