Home
Class 12
CHEMISTRY
Which lanthanoid compound is used as a m...

Which lanthanoid compound is used as a most powerful liquid lasers after dissolving it in selenium oxychloride? a)Cerium oxide b)Neodymium oxide c)Promethium sulphate d)Ceric sulphate

A

Cerium oxide

B

Neodymium oxide

C

Promethium sulphate

D

Ceric sulphate

Text Solution

Verified by Experts

The correct Answer is:
B

Neodymium oxide
Promotional Banner

Topper's Solved these Questions

  • THE D-AND F-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-II)|50 Videos
  • THE D-AND F-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III)|50 Videos
  • THE D- AND F-BLOCK ELEMENT

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|40 Videos
  • THE P-BLOCK ELEMENTS (XII)

    BRILLIANT PUBLICATION|Exercise LEVEL- II (GROUP 18 NOBLE GASES) (ASSERTION - REASON) |5 Videos

Similar Questions

Explore conceptually related problems

An organic compound A, C₈H₆ on treatment with dilute sulphuric acid-containing mercuric sulphate gives a compound B , which can also be obtained from a reaction of benzene with an acid chloride in the presence of anhydrous aluminium chloride. The compound B, when treated with Iodine in aqueous KOH, yields C and a yellow compound D. Identify A B C and D with justification.

The catalytic activity of transition metals and their compounds is mainly due to: a)their magnetic behaviour b)their unfilled d-orbitals c)their ability to adopt variable oxidation state d)their chemical reactivity

In which of the following properties did Be shows similarities with Al? a) Both are comparatively stable in air. b) They have no tendency to form peroxide and superoxides. c) Both provide colour to Bunsen flame. d) Both form coloured solution in NH_(3) e) The oxides and hydroxides of both elements are amphoteric.

Two compounds of iron are given. FeSo_4, Fe_2(SO_4)_3 (The oxidation state of SO_4 -2 ) a. Identify the compound in which iron shows +2 oxidation state. b. Which of these compound posses Fe^3+ ions. c. write the subshell electronic configuration of Fe^3+ ions d. Give reason for the various oxidation states of transition elements.

Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 oxidation state, which of the following statements is incorrect? a)Because of the large size of the Ln(III) ions, the bonding in its compounds is predominantly ionic in character. b)The ionic sizes of Ln (III) decrease in general with increasing atomic number. c)Ln(III) compounds are generally colourless. d)Ln(III) hydroxides are mainly basic in character..

An atom has three shells and there is 6 electrons in the outermost subshell of the atom. Answer te following. a) Which is the element? b) Write the common oxidation state of its compounds. c) Is it metal or non-metal?

The order of reactivity of some metais are given. Answer the following questions by analysing it. Al gt Zn gt Cu gt Au a) Which metal is produced by the electrolysis of its molen salt? b) Matal occur in free state in nature. c) Metal produced by the self oxidation-reduction reaction. d) Metal are which is reduced by carbon.

a) What are the changes that can be observed with the iron rod and the color of copper sulphate solution if iron rod is dipped in copper sulphate solution? b) Write the equation of the oxidation and reduction reactions. c) What will be the change if silver rod is used instead of iron rod? What is the reason?

Which are correct statements: (A) Oxides of Bromine are most stable (B) Fluorine form 2 oxides and iodine oxide decompose on heating ( C) Acidity and reducing power of HX acids follow the order HF gt HCl gt HBr gt HI ( D) Fluorine form only one oxoacid HOF and the acidity of oxoacids of chlorine HOCl lt HClO_(2) lt HClO_(3) lt HClO_(4)

BRILLIANT PUBLICATION-THE D-AND F-BLOCK ELEMENTS-QUESTIONS (LEVEL-III)
  1. Which lanthanoid compound is used as a most powerful liquid lasers aft...

    Text Solution

    |

  2. A metal M which is not affected by strong acids like conc. HNO3 conc. ...

    Text Solution

    |

  3. The acidic, basic or amphoteric nature of Mn2 O7 ,V2O5, and CrO are re...

    Text Solution

    |

  4. An inorganic compound on strong heating gave a blackish brown powder a...

    Text Solution

    |

  5. MnO(2) overset(I)(to)MnO(4)^(2-)overset(II)(to)MnO(4)^(-) I and II are

    Text Solution

    |

  6. Identify the product and its colour when MnO2 is fused with solid KOH ...

    Text Solution

    |

  7. When manganous salt is fused with a mixture of KNO3 and solid NaOH, th...

    Text Solution

    |

  8. Consider following statements, I. The size of the lanthanide M^(3+) io...

    Text Solution

    |

  9. Most transition metals I:forms sets of compounds which display differe...

    Text Solution

    |

  10. [Fe(H2 O)5 NO]^(2+) is brown-ring complex. In this complex

    Text Solution

    |

  11. When K2 CrO4 is added to CuSO4 solution, there is formation of CuCrO4...

    Text Solution

    |

  12. Select the correct statements(s)

    Text Solution

    |

  13. Which of the following statements are true?

    Text Solution

    |

  14. Although +3 is the characteristic oxidation state for lanthanoids, cer...

    Text Solution

    |

  15. Select correct statements.

    Text Solution

    |

  16. When CO2 is passed into aqueous

    Text Solution

    |

  17. Select correct statements (s)

    Text Solution

    |

  18. Which of the following statements are correct

    Text Solution

    |

  19. Amongst the following, identify the species with an atom in +6 oxidati...

    Text Solution

    |

  20. Which metals are present in german silver?

    Text Solution

    |

  21. The complex forming tendency of a transition metal depends upon:

    Text Solution

    |