# Quantum Number 2: Question Preview (ID: 4180)

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Calculate the maximum number of electrons that can occpy the levels when n = 3 |
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a) 4 | b) 8 | c) 12 | d) 18 | |

Calculate the maximum number of electrons that can occpy the levels when n = 5 |
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a) 20 | b) 30 | c) 40 | d) 50 | |

Calculate the maximum number of electrons that can occpy the levels when n = 10 |
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a) 50 | b) 100 | c) 150 | d) 200 | |

Calculate the maximum number of electrons that can occpy the levels when n = 12 |
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a) 200 | b) 244 | c) 288 | d) 322 | |

Calculate the maximum number of electrons that can occpy the levels when n = 23 |
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a) 512 | b) 724 | c) 1058 | d) 1542 | |

A photon of UV light possesses enough energy to mutate a starnd of human DNA. what is the energy of a single UV photon and a mole of UV photons having a wavelength of 25 nm? |
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a) 4.0x10^6 J/mol | b) 4.8x10^6 J/mol | c) 5.1x10^6 J/mol | d) 5.8x10^6 J/mol | |

It takes 208.4 kJ of energy to remove 1 mole of electrons from an atom on the surface of rubidium metal. How much energy does it take to remove a single electron from Rb atom? |
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a) 2.264x10^-19 J | b) 3.461x10^-19 J | c) 4.202x10^-19 J | d) 5.123x10^-19 J | |

an FM radio station broadcasts a t99.5 MHz. Calculate the wavelength of the corresponding radio waves. |
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a) 1.00 m | b) 2.01 m | c) 3.01 m | d) 4.02 m | |

The laser in an audio compact disk player uses light with a wavelength of 7.80 x 10^2 nm. Calculate the frequency of this light. |
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a) 3.84x10^14 s^-1 | b) 4.54x10^14 s^-1 | c) 5.31x10^14 s^-1 | d) 6.76x10^14 s^-1 | |

Work function of an element is the energy required to remove an electron from surface of solid. The work function for lithium is 279.7 kJ/mol. What is the max wavelength? |
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a) 427.7 nm | b) 234.2 nm | c) 676.3 nm | d) 432.2 nm | |

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