JEE Questions for Chemistry Classification Of Elements And Periodicity In Properties Quiz 8 - MCQExams.com

The ionization enthalpies of Li and sodium are 520 kJ mol-1 and 495 kJ mol-1 respectively. The energy required to convert all the atoms present in 7 mg of Li vapours and 23 mg of sodium vapours to their respective gaseous cations respectively are
  • 52 J, 49.5 J
  • 520J, 495 J
  • 49.5 J, 52 J
  • 495 J, 520 J
Which of the following set includes the elements which were named in honour of certain countries ?
  • In, Ge, Po
  • Ge, Bk, Cf
  • Ru, Am, Ge
  • All are correct
The bond dissociation energies of H-H, C-C and C-H bonds respectively are 104.2, 83.1 and 98.8 kcal mol-1. The electronegativity of carbon is
  • 2.53
  • 2.51
  • 2.50
  • 2.52
0:0:1


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