Multiple choice

Which of the following electronic configuration is not possible ?

  1. 1s2 2s2 2p6 .

  2. 1s2 2s2 2p7 .

  3. 1s2 2s2 .

  4. 1s2 2s2 2p5 .
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

this option is correct because , p subshell has 3 orbital each can accommodate 2 electrons hence ' p '  orbital can accommodate 6 electrons . in this case p has 7 electrons . hence this statement is wrong and therefore  this option is correct .

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