Home
Class 11
CHEMISTRY
The first four ionization energies of an...

The first four ionization energies of an element are `191, 578, 872`, and `5962 "kcal"`. The number of valence electrons in the element is :

A

1

B

2

C

3

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
( c) Energy difference between `3`rd and `4` th `IP`s is very high.
Promotional Banner

Topper's Solved these Questions

  • ATOMIC STRUCTURE

    A2Z|Exercise Hydrogen Spectrum|35 Videos

  • ATOMIC STRUCTURE

    A2Z|Exercise Heisenbergs Uncertainity Principle And Debroglie Equation|44 Videos

  • ATOMIC STRUCTURE

    A2Z|Exercise Electromagnetic Wave Theory, Plank Quantum Theory And Photoelectric Effect|25 Videos

  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

The first ionization energy value of an element area 191, 578,872 and 5692 kcals. The number of valence electrons in the element are

Ionization energy of an element is:

The first ionization energies of group 16 elements

The first five inization energies of an element are 9.1,16.2,24.5,35 and 205.7eV respectively then, number of valence electrons in the atom is:

The first four I.E. values of an element are 284, 412, 656 and 3210 kJ mol^(-1) . The number of valence electrons in the element are:

A2Z-ATOMIC STRUCTURE-Bohr'S Model
  1. The kinetic energy of an electron in the second Bohr orbit of a hydrog...

    Text Solution

    |

  2. Which statement is true.

    Text Solution

    |

  3. The first four ionization energies of an element are 191, 578, 872, an...

    Text Solution

    |

  4. If velocity of an electron in 1^(st) Bohr orbit of hydrogen atom us x,...

    Text Solution

    |

  5. Energy of an electron is given by E = - 2.178 xx 10^-18 J ((Z^2)/(n^2)...

    Text Solution

    |

  6. The ratio of the velocity of light and the velocity of electron in the...

    Text Solution

    |

  7. The wavelength associated with an electron moving with a velocity of 1...

    Text Solution

    |

  8. The energy of electron in first Bohr's orbit of H-"atom" is - 13.6 eV ...

    Text Solution

    |

  9. Ionisation energy of He^+ is 19.6 xx 10^-18 J "atom"^(-1). The energy ...

    Text Solution

    |

  10. The energy of second orbit of hydrogen is equal to the energy of ,

    Text Solution

    |

  11. If first ionisation energy of hydrogen be E, then the ionisation energ...

    Text Solution

    |

  12. The ratio of (E2 - E1) "to" (E4 - E3) for the hydrogen atom is approxi...

    Text Solution

    |

  13. With increasing member, the energy difference between adjacent levels ...

    Text Solution

    |

  14. Which one of the following is considered as the main postulate of Bohr...

    Text Solution

    |

  15. The energy of second Bohr orbit of the hydrogen atom is - 328 k J mol^...

    Text Solution

    |

  16. The ratio of the energy of the electron in ground state of hydrogen to...

    Text Solution

    |

  17. The ratio of the radii of three Bohr orbit is

    Text Solution

    |

  18. Energy of third orbit of Bohr's atom is.

    Text Solution

    |

  19. If the radius of first Bohr orbit be a0, then the radius of the third ...

    Text Solution

    |

  20. In H-atom electron jumps from 3^(rd) to 2^(nd) energy level, the energ...

    Text Solution

    |