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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 |

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NEET - 2023

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

1. | \(4.77~ \mathring{\text{A}}\) | 2. | \(0.53~ \mathring{\text{A}}\) |

3. | \(1.06~ \mathring{\text{A}}\) | 4. | \(1.59~ \mathring{\text{A}}\) |

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2023

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

1. | \(13.6~\mathrm{eV}\) | 2. | \(6.8~\mathrm{eV}\) |

3. | \(1.51~\mathrm{eV}\) | 4. | \(3.4~\mathrm{eV}\) |

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2023

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The wavelength of Lyman series of hydrogen atom appears in:

1. | visible region |

2. | far infrared region |

3. | ultraviolet region |

4. | infrared region |

Subtopic: Spectral Series |

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From NCERT

NEET - 2023

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

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

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

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

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

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 |

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From NCERT

NEET - 2023

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Let \(T_1\) and \(T_2\) be the energy of an electron in the first and second excited states of hydrogen atom, respectively. According to Bohr's model of an atom, the ratio \(T_1:T_2\) is:

1. \(9:4\)

2. \(1:4\)

3. \(4:1\)

4. \(4:9\)

1. \(9:4\)

2. \(1:4\)

3. \(4:1\)

4. \(4:9\)

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2022

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Let \(L_1\) and \(L_2\) be the orbital angular momentum of an electron in the first and second excited states of the hydrogen atom, respectively. According to Bohr's model, the ratio \(L_1:L_2\) is:

1. \(1:2\)

2. \(2:1\)

3. \(3:2\)

4. \(2:3\)

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2022

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Let \(R_1\) be the radius of the second stationary orbit and \(R_2\) be the radius of the fourth stationary orbit of an electron in Bohr's model. The ratio \(\frac{R_1}{R_2}\) is:

1. | \(0.25\) | 2. | \(0.5\) |

3. | \(2\) | 4. | \(4\) |

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2022

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For which one of the following Bohr model is not valid?

1. | Singly ionised helium atom \(He^{+}\) |

2. | Deuteron atom |

3. | Singly ionised neon atom \(Ne^{+}\) |

4. | Hydrogen atom |

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2020

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The total energy of an electron in the \(n^{th}\) stationary orbit of the hydrogen atom can be obtained by:

1. \(E_n = \frac{13.6}{n^2}~\text{eV}\)

2. \(E_n = -\frac{13.6}{n^2}~\text{eV}\)

3. \(E_n = \frac{1.36}{n^2}~\text{eV}\)

4. \(E_n = -{13.6}\times{n^2}~\text{eV}\)

Subtopic: Bohr's Model of Atom |

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From NCERT

NEET - 2020

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