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

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry2. structure of atom1 Mark
MCQ
Which out of the following configurations is incorrect?
  • ✓
    $1{s^2}\,\,2{s^2}\,\,2p_x\,^2\,\,2p_y\,\,^2\,2p_z\,^0$
  • B
    $1{s^2}\,\,2{s^2}\,\,2p_x\,^1\,\,2p_y\,^1$
  • C
    $1{s^2}\,\,2{s^2}\,\,2p_x\,^1\,\,2p_y\,^1\,\,2p_z\,^1$
  • D
    $1{s^2}\,\,2{s^2}\,\,2{p^6}3{s^2}\,\,3{p^6}\,\,3{d^5}\,\,4{s^1}$
✓

Answer

Correct option: A.
$1{s^2}\,\,2{s^2}\,\,2p_x\,^2\,\,2p_y\,\,^2\,2p_z\,^0$
a
$1{s^2}\,\,2{s^2}\,\,2p_x\,^1\,\,2p_y\,^1\,\,2p_z\,^1$ (Pauli's exclusion principle)

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