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2. structure of atom — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
Electronic configuration of ${H^ - }$ is
  • A
    $1{s^0}$
  • B
    $1{s^1}$
  • ✓
    $1{s^2}$
  • D
    $1{s^1}\,2{s^1}$
✓

Answer

Correct option: C.
$1{s^2}$
c
(c) Electronic configuration of ${H^ - }$ is $1{s^2}$. It has $2 $ electrons in extra nuclear space.

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