Multiple choice

In which of the following ionizing processes, the magnetic moment has changed and the bond order has increased?

  1. H2→ H2+

  2. N2→ N2+

  3. O2→ O2+

  4. F2→ F2-

  5. C2→C2+
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

O2 (16 e-) : ϭ1s2 ϭ*1s2 ϭ2s2 ϭ*2s2 ϭ2pz2 π2px2 π2py2 π*2px1 π*2py1 Bond order = ½ (6 - 2) = 2, diamagnetic O2+ (15 e-) : ϭ1s2 ϭ*1s2 ϭ2s2 ϭ*2s2 ϭ2pz2 π2px2 π2py2 π*2px1 π*2py Bond order = ½ (6 - 1) = 2.5, paramagnetic Magnetic behaviour changes from diamagnetic to paramagnetic Bond order increased.

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