Home
Class 12
CHEMISTRY
The oxidation state of Cr in K(2)Cr(2)O(...

The oxidation state of `Cr` in `K_(2)Cr_(2)O_(7)` is:

A

`+5`

B

`+3`

C

`+6`

D

`+7`

Text Solution

Verified by Experts

The correct Answer is:
C
`K_2Cr_2O_7` : oxidation state of K =+1, Cr=x , O=-2
`therefore` +2 +2x -14=0 `therefore` x=+6
Promotional Banner

Topper's Solved these Questions

  • D AND F BLOCK ELEMENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|60 Videos

  • CO-ORDINATION COMPOUNDS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|40 Videos

  • ELECTROCHEMISTRY

    MARVEL PUBLICATION|Exercise Test your Grasp|50 Videos

Similar Questions

Explore conceptually related problems

The oxidation number of Cr in K_(2)Cr_(2)O_(7) is

The oxidation state of Cr in Cr_(2)O_(7)^(2-) is

What is the change in oxidation state of Cr" in " K_(2)Cr_(2)O_(7) when it acts as an oxidising agent.

In acidic medium, H_(2)O_(2) changes Cr_(2)O_(7)^(2-) ion to CrO_(5) . The oxidation states of Cr in Cr_(2)O_(7)^(2-) and CrO_(5) are respectively :

The coordination number and oxidation state of Cr in K_(3)[Cr(C_(2)O_(4))_(3)] an respectively

The oxidation states of Cr in [Cr(H_(2)O)_(6)]Cl_(3). [Cr(C_(6)H_(6))_(2)] and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))] respectively are

In acidic medium, H_(2)O_(2) changes Cr_(2)O_(7)^(2-) to CrO_(5) which has two (-O-O-) bonds. Oxidation state of Cr in CrO_(5) is

MARVEL PUBLICATION-D AND F BLOCK ELEMENTS -TEST YOUR GRASP
  1. The oxidation state of Cr in K(2)Cr(2)O(7) is:

    Text Solution

    |

  2. The number of transition series in the periodic table are

    Text Solution

    |

  3. What is the general electronic configuration of transition elements

    Text Solution

    |

  4. Each transition series contains only 10 elements because

    Text Solution

    |

  5. Which one of the following refers to configuration of transition elem...

    Text Solution

    |

  6. The outer electronic configuration of chromium is

    Text Solution

    |

  7. Which of the following does NOT show different oxidation states?

    Text Solution

    |

  8. Calculate the oxidation number of Mn in KMnO(4) molecule.

    Text Solution

    |

  9. The properties of transition metals are in between the properties of ...

    Text Solution

    |

  10. Which transition metal shows the highest oxidation state ?

    Text Solution

    |

  11. Which of the following would be diamagnetic?

    Text Solution

    |

  12. The element present immediately below Zn in the periodic table in the ...

    Text Solution

    |

  13. Oxidation state of +1 is possible with

    Text Solution

    |

  14. For Sc (2 1), if both 3d and 4s electrons in involved in bonding, the ...

    Text Solution

    |

  15. Which one of the following forms a colourless solution in aqueous medi...

    Text Solution

    |

  16. Which of the following group belongs to transition series ?

    Text Solution

    |

  17. In transition elements, the differentiating electron enters into subs...

    Text Solution

    |

  18. Which of has the highest number of unpaired electrons?

    Text Solution

    |

  19. The range of wavelength of the visible light is

    Text Solution

    |

  20. Which of the following salt give coloured aqueous solution ?

    Text Solution

    |

  21. Sulphide ore of Zinc is

    Text Solution

    |