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Match List I with List II.

Choose the correct answer from the options given below:

List I(Spectral Lines of Hydrogen for transitions from) |
List II(Wavelength (nm)) |
||

\(\mathrm{A.}\) | \(n_2=3\) to \(n_1=2\) | \(\mathrm{I.}\) | \(410.2\) |

\(\mathrm{B.}\) | \(n_2=4\) to \(n_1=2\) | \(\mathrm{II.}\) | \(434.1\) |

\(\mathrm{C.}\) | \(n_2=5\) to \(n_1=2\) | \(\mathrm{III.}\) | \(656.3\) |

\(\mathrm{D.}\) | \(n_2=6\) to \(n_1=2\) | \(\mathrm{IV.}\) | \(486.1\) |

Choose the correct answer from the options given below:

1. | \(\mathrm{A - III, B - IV, C - II, D - I}\) |

2. | \(\mathrm{A - IV, B - III, C - I, D - II}\) |

3. | \(\mathrm{A - I, B - II, C - III, D - IV}\) |

4. | \(\mathrm{A - II, B - I, C - IV, D - III}\) |

Subtopic: Spectral Series |

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From NCERT

NEET - 2024

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Given below are two statements:

In the light of the above statements, choose the most appropriate answer from the options given below:

Statement I: |
Atoms are electrically neutral as they contain equal number of positive and negative charges. |

Statement II: |
Atoms of each element are stable and emit their characteristic spectrum. |

In the light of the above statements, choose the most appropriate answer from the options given below:

1. | Both Statement I and Statement II are incorrect. |

2. | Statement I is correct but Statement II is incorrect. |

3. | Statement I is incorrect but Statement II is correct. |

4. | Both Statement I and Statement II are correct. |

Subtopic: Spectral Series |

From NCERT

NEET - 2024

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Match List-I with List-II

Choose the correct answer from the options given below:

List-I(Series) |
List-II(Wave number in cm ^{–1}) |
||

A. | Balmer series | I. | \( R\left(\dfrac{1}{1^2}-\dfrac{1}{n^2}\right) \) |

B. | Lyman series | II. | \( R\left(\dfrac{1}{4^2}-\dfrac{1}{n^2}\right) \) |

C. | Brackett series | III. | \( R\left(\dfrac{1}{5^2}-\dfrac{1}{n^2}\right) \) |

D. | Pfund series | IV. | \( R\left(\dfrac{1}{2^2}-\dfrac{1}{n^2}\right)\) |

Choose the correct answer from the options given below:

1. | A-I, B-IV, C-III, D-II |

2. | A-II, B-III, C-IV, D-I |

3. | A-IV, B-I, C-II, D-III |

4. | A-III, B-II, C-I, D-IV |

Subtopic: Spectral Series |

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From NCERT

NEET - 2024

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The spectral series which corresponds to the electronic transition from the levels \(\mathrm{n}_{2}=5,6,\ldots \) to the level \(\mathrm{n}_{1}=4\mathrm~\) is:

1. | Pfund series |

2. | Brackett series |

3. | Lyman series |

4. | Balmer series |

Subtopic: Spectral Series |

74%

From NCERT

NEET - 2024

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Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then:

1. | \(\lambda_{3}>\lambda_{2},\lambda_{1}=2\lambda_{2}\) |

2. | \(\lambda_{3}>\lambda_{2},\lambda_{1}=4\lambda_{2}\) |

3. | \(\lambda_{1}>\lambda_{2},\lambda_{2}=2\lambda_{3}\) |

4. | \(\lambda_{2}>\lambda_{1},\lambda_{2}=2\lambda_{3}\) |

Subtopic: Spectral Series |

51%

From NCERT

NEET - 2024

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In hydrogen spectrum, the shortest wavelength in the Balmer series is \(\lambda\). The shortest wavelength in the Bracket series is:

1. \(16\lambda\)

2. \(2\lambda\)

3. \(4\lambda\)

4. \(9\lambda\)

1. \(16\lambda\)

2. \(2\lambda\)

3. \(4\lambda\)

4. \(9\lambda\)

Subtopic: Spectral Series |

59%

From NCERT

NEET - 2023

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The radius of inner most orbit of a hydrogen atom is \(5.3 \times 10^{-11}\) m. What is the radius of the third allowed orbit of a hydrogen atom?

1. \(4.77~ \mathring{A}\)

2. \(0.53~ \mathring{A}\)

3. \(1.06~ \mathring{A}\)

4. \(1.59~ \mathring{A}\)

1. \(4.77~ \mathring{A}\)

2. \(0.53~ \mathring{A}\)

3. \(1.06~ \mathring{A}\)

4. \(1.59~ \mathring{A}\)

Subtopic: Bohr's Model of Atom |

70%

From NCERT

NEET - 2023

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The ground state energy of a hydrogen atom is \(-13.6~\text{eV}\). The energy needed to ionize the hydrogen atom from its second excited state will be:

1. \(13.6~\text{eV}\)

2. \(6.8~\text{eV}\)

3. \(1.51~\text{eV}\)

4. \(3.4~\text{eV}\)

1. \(13.6~\text{eV}\)

2. \(6.8~\text{eV}\)

3. \(1.51~\text{eV}\)

4. \(3.4~\text{eV}\)

Subtopic: Bohr's Model of Atom |

58%

From NCERT

NEET - 2023

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The wavelength of the Lyman series of hydrogen atom appears in:

1. | visible region |

2. | far infrared region |

3. | ultraviolet region |

4. | infrared region |

Subtopic: Spectral Series |

78%

From NCERT

NEET - 2023

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The angular momentum of an electron moving in an orbit of a hydrogen atom is \(1.5\left(\dfrac h\pi\right).\) The energy in the same orbit is nearly:

1. | \(-1.5~\text{eV}\) | 2. | \(-1.6~\text{eV}\) |

3. | \(-1.3~\text{eV}\) | 4. | \(-1.4~\text{eV}\) |

Subtopic: Bohr's Model of Atom |

80%

From NCERT

NEET - 2023

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