Home
Class 11
CHEMISTRY
How many 'd' electrons are present in Cr...

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

A

4

B

5

C

6

D

3

Text Solution

Verified by Experts

The correct Answer is:
A
`3d^(2+) 45^(@)`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

How many unpaired electrons are present in Mn^(2+) ion ? How do they influence magnetic behaviour of Mn^(2+) ion?

How many upaired electrons are present in Ni^(2+) ?

How many electrons are present in d_(z2) orbital of [Ni(gly)_(2)] ? .

How many unpaired electrons are present in Ni^(2+) cation? (At. No. = 28)

For the transition metal with the electron configuration 1s^(2)2s^(2)2p^(6)4s^(2)3d^(6) ,How many unpaired electrons are present in tis +2 ion in the ground state ?

How many unpaired electrons are present in N_2^+ ?

NARAYNA-ATOMIC STRUCTURE-All Questions
  1. The orbital diagram in which the Aufbau principle is violated is

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  4. The ion that is most stable

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  18. Electromagnetic radiation of wavelength 242 nm is just sufficient to i...

    Text Solution

    |

  19. When a metal is irradiated with light of frequency 4.0 xx 10^(16)s^(-1...

    Text Solution

    |

  20. In photo electric effect, if the energy required to over come the attr...

    Text Solution

    |