Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

D and F Block Elements question

2013 · Q97
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Chemistry
  4. /D and F Block Elements
  5. /2013 · Q97

D and F Block Elements question

2013 · Q97

NEETChemistryD and F Block ElementsMCQ+4 / −1
Which of the following lanthanoid ions is diamagnetic?
(At. nos. Ce = 58, Sm = 62, Eu = 63, Yb = 70)
  1. A
    Eu2+
  2. B
    Yb2+
  3. C
    Ce2+
  4. D
    Sm2+
View written solutionFree

Correct answer: B

Ion with no unpaired electron is diamagnetic in nature.

Ce2+ = [Xe] 4f2 → 2 unpaired electrons

Sm2+ = [Xe] 4f6 → 6 unpaired electrons

Eu2+ = [Xe] 4f7 → 7 unpaired electrons

Yb2+ = [Xe] 4f14 → No unpaired electron

PreviousNext

More from D and F Block Elements

  • Which of the following statements about the interstitial compounds is incorrect?2013 · MCQ
  • The catalytic activity of transition metals and their compounds is ascribed mainly to2012 · MCQ
  • Four successive members of the first series of the transition metals are listed below. For which one of them the standard potential (EM2+/Mo​) value has a positive sign?2012 · MCQ
  • Which of the following exhibits only + 3 oxidation state?2012 · MCQ
  • Which one of the following does not correctly represent the correct order of the property indicated against it?2012 · MCQ
  • Which of the statements is not true?2012 · MCQ
  • Identify the alloy containing a non-metal as a constituent in it.2012 · MCQ
  • Acidified K2Cr2O7 solution turns green when Na2SO3 is added to it. This is due to the formation of2011 · MCQ