Home
Class 11
CHEMISTRY
The rule that explains the reason for ch...

The rule that explains the reason for chromium to have `[Ar]3d^(5)4s^(1)` configuration instead of `[Ar] 3d^(4)4s^(2)`?

A

Pauli's exclusion principle

B

Aufbuat principle

C

Hund's rule

D

Heisenberg's principle

Text Solution

Verified by Experts

The correct Answer is:
C
Hund's rule
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

3d^4 configuration may have the exchange of s

[Ar]^(18) 3d^(10) 4s^(1) electronic configuration belongs to

Statement-1 : The groundstate configuration of Cr is [Ar] 3d^(5) 4s^(1) Statement-2 : The energy of atom is lesser in 3d^(5)4s^(1) configuration compared to 3d^(4)4s^(2) configuration.

Statement-1 : The ground state configuration of Cr is [Ar] 3d^(5) 4s^(1) Statement-2 : The energy of atom is lessen in 3d^(5)4s^(1) configuration compared to 3d^(1)4s(2) configuration.

Identify the atom which has ground state configuration [Ar]3d^(10)4s^(2)4p^(1)

The outer electronic configuration of the ground state chromium atom is 3d^(2),4s^(2)

Element with electronic configuration as [Ar]^(18)3d^(5)4s^(2) is placed in :

the configuration [Ar]3d^(10)4s^(2)4p^(4) is simmilar to that of :

NARAYNA-ATOMIC STRUCTURE-All Questions
  1. the maximum number of electrons that can be accommodarted in all t...

    Text Solution

    |

  2. During ionisation of copper atom, the quantum numbers of electron remo...

    Text Solution

    |

  3. The rule that explains the reason for chromium to have [Ar]3d^(5)4s^(1...

    Text Solution

    |

  4. The orbital diagram in which the Aufbau principle is violated is

    Text Solution

    |

  5. The electronic configuration of gadolinium (Atomic number 64) is

    Text Solution

    |

  6. How many 'd' electrons are present in Cr^(2+) ion?

    Text Solution

    |

  7. The ion that is most stable

    Text Solution

    |

  8. Which have the same number of s-electrons as the d-electrons in Fe^(2...

    Text Solution

    |

  9. Which of the following statements are incorrect (I) There are five u...

    Text Solution

    |

  10. The e/m ratio of cathode rays is x unit, when hydrogen is filled in th...

    Text Solution

    |

  11. a-particles are projected towards the following metals, with the same ...

    Text Solution

    |

  12. Which of the follwong nuclear reactiosn will generate an isotope?

    Text Solution

    |

  13. Chlorine exists in two isotopic forms Cl-37 and Cl-35 but its atomic m...

    Text Solution

    |

  14. The mass number of three isotopes of an element are 10,12,14 units. Th...

    Text Solution

    |

  15. An ion with mass number 56 contains 3 units of positive charge and 30....

    Text Solution

    |

  16. The frequency of a wave light is 1.0 xx 10^(6)sec^(-1). The wave lengt...

    Text Solution

    |

  17. The energy per quantum associated with light of wave length 250 xx 10^...

    Text Solution

    |

  18. What is the energy of photons that corresponds to a wave number of 2.5...

    Text Solution

    |

  19. Nitrogen laser produces a radiation at a wavelength of 337.1nm. If the...

    Text Solution

    |

  20. The ratio of energies of photons with wavelength 2000A^(0) and 4000A^(...

    Text Solution

    |