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4. Chemical bonding and molecular structure — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry4. Chemical bonding and molecular structure1 Mark
MCQ
The bond order of $He_2^ + $ molecule ion is
  • A
    $1$
  • B
    $2$
  • ✓
    $0.5$
  • D
    $0.25$
✓

Answer

Correct option: C.
$0.5$
(c)The electron’s distribution in molecular orbitals is  $1{s^2},\,2{s^1}$

$B.O. $ $= \frac{{2 - 1}}{2} = \frac{1}{2} = 0.5$.

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