Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

D and F Block Elements question

2024 · 6 Apr · Shift 1 · Q29
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Chemistry
  4. /D and F Block Elements
  5. /2024 · 6 Apr · Shift 1 · Q29

D and F Block Elements question

2024 · 6 Apr · Shift 1 · Q29

JEE MainChemistryD and F Block ElementsNumerical+4 / −1
Among CrO,Cr2O3\mathrm{CrO}, \mathrm{Cr}_2 \mathrm{O}_3CrO,Cr2​O3​ and CrO3\mathrm{CrO}_3CrO3​, the sum of spin-only magnetic moment values of basic and amphoteric oxides is ‾10−2BM\underline{\hspace{2cm}}10^{-2} \mathrm{BM}​10−2BM(nearest integer). (Given atomic number of Cr\mathrm{Cr}Cr is 24 )
Numerical answer
PreviousNext

More from D and F Block Elements

  • Arrange the following elements in the increasing order of number of unpaired electrons in it. (A) Sc(B) Cr(C) V(D) Ti(E) Mn Choose the correct answer from the options given below :2024 · MCQ
  • Among VO2+​,MnO4−​ and Cr2​O72−​, the spin-only magnetic moment value of the species with least oxidising ability is ​ BM (Nearest integer). (Given atomic member V=23,Mn=25,Cr=24…2024 · Numerical
  • Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe3+ oxidises the iodide ion B. Fe3+ oxidises the persulphate ion C. Fe2+ reduces the iodide ion D. Fe2+…2024 · MCQ
  • Number of colourless lanthanoid ions among the following is ​. Eu3+,Lu3+,Nd3+,La3+,Sm3+2024 · Numerical
  • The electronic configuration of Cu(II) is 3 d9 whereas that of Cu(I) is 3 d10. Which of the following is correct?2024 · MCQ
  • A transition metal 'M' among Sc,Ti,V,Cr,Mn and Fe has the highest second ionisation enthalpy. The spin-only magnetic moment value of M+ ion is ​…2024 · Numerical
  • The electronic configuration of Einsteinium is : (Given atomic number of Einsteinium =99)2024 · MCQ
  • Give below are two statements : Statement I : The higher oxidation states are more stable down the group among transition elements unlike p-block elements. Statement II : Copper can not liberate hydrogen from weak acids. In the light of…2024 · MCQ