Home
Class 12
CHEMISTRY
(a) How would you account for the follow...

(a) How would you account for the following :
(i) Actinoids contraction is greater than Lanthanoids contracation.
(ii) Transition metals form coloured compounds.
(b) Complete the following :
`2MnO_(4)^(-)+6H^(+)+5NO_(2)^(-) to`

Text Solution

Verified by Experts

(b)`2MnO_(4)^(-) + 6H^(+) + 5NO_(2)^(-) rarr 2Mn^(2+) + 5NO_(3)^(-) + 3H_(2)O`
Promotional Banner

Topper's Solved these Questions

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise ADDITIONAL QUESTIONS (LONG ANSWER QUESTIONS)|12 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise HIGHER ORDER THINKING SKILLS|10 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise ADDITIONAL QUESTIONS (VERY SHORT ANSWER QUESTIONS)|49 Videos

  • CORDINATION COMPOUNDS

    PRADEEP|Exercise Important Questions|28 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|25 Videos

Similar Questions

Explore conceptually related problems

(a) How would you account for the following: (i) The chemistry of actinoids is more complicated as compared to lanthanoids. (ii) Transition metals form complex compounds. (b) Complete the following equation: 2MnO_4^(-) + 6H^(+) + 5SO_3^(2-) to

How will you account for the following : (a) (i) The chemistry of actnoids is more complicated as compared to lanthanoids . (ii) Transition metal from complex compounds. (b) Complete the following equations : 2MnO_(4)^(-)+6H^(+)+5SO_(3)^(2-) to

Assing the reason for the following : (i) Transition metals exhibit enthalpy of atomisation. (ii) Transition metals form interstitial compounds .

PRADEEP-D- AND F-BLOCK ELEMENTS-ADDITIONAL QUESTIONS (SHORT ANSWER QUESTIONS )
  1. Name the gas evolved when concentrated HCI is added to powdered potass...

    Text Solution

    |

  2. Write an equation in ionic form to represent the oxidizing actionof Cr...

    Text Solution

    |

  3. Why Mn^(2+) compounds are more stable than Fe^(2+) compounds towards o...

    Text Solution

    |

  4. Give the preparation of potassium permanganate from pyrolusite ore.

    Text Solution

    |

  5. What happens when (i) KMnO(4) is heated (ii) K(2)Cr(2)O(7)is heated.

    Text Solution

    |

  6. What happens when acidified KMnO(4)reacts with (i) H(2)S (ii)Oxalic ac...

    Text Solution

    |

  7. Describe the oxidising property of KMnO(4) in neutral or faintly alkal...

    Text Solution

    |

  8. What chemical changes take place when (i) MnO(2) is fused with KOH in ...

    Text Solution

    |

  9. Write ionic equations for the conversion of (a)manganate to permanga...

    Text Solution

    |

  10. Write chemical equations for the following reactions: (a) Oxidatio...

    Text Solution

    |

  11. Complete the following chemical equations : (i) 8MnO(4)^(-)+3S(2)O(3...

    Text Solution

    |

  12. What is meant by disproporitonation of an oxidation state? Give an exa...

    Text Solution

    |

  13. What happens when (i) (NH(4))(2) Cr(2) O(7) is heated ? (ii) H(3)PO...

    Text Solution

    |

  14. Complete the following equations : (i) 2MnO(4)^(-) + 16 H^(+) + 5S^...

    Text Solution

    |

  15. What are inner-transition elements? Decide which of the following atom...

    Text Solution

    |

  16. What is lanthanoid contraction? What is its cause and what ar its cons...

    Text Solution

    |

  17. Misch metal is

    Text Solution

    |

  18. How would you account for the following : (i) Many of the transition...

    Text Solution

    |

  19. (a) How would you account for the following : (i) Actinoids contract...

    Text Solution

    |

  20. Give reasons for the following: (i) Transition metals form alloys....

    Text Solution

    |