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MHT CET 202626 AprilMorning Shift
Exam
MHT CET
Year
2026
Date
26 April
Shift
Morning Shift
Subject
Chemistry
Chapter
Structure of Atom

MHT CET 2026 · 26 April · Morning Shift · Chemistry · Structure of Atom

How many total number of s and p electrons are respectively present...

How many total number of s and p electrons are respectively present in Cl−\text{Cl}^- ?

Options

  1. A66 and 1111
  2. B66 and 1212
  3. C22 and 77
  4. D1111 and 66

Correct answer

B. 66 and 1212

Step-by-step solution

The atomic number of Chlorine (Cl\text{Cl}) is 1717.

The Cl−\text{Cl}^{-} ion has gained one electron, making the total number of electrons 17+1=1817 + 1 = 18.

The electronic configuration of Cl−\text{Cl}^{-} is 1s22s22p63s23p61s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6}.

Total number of s electrons =2+2+2=6= 2 + 2 + 2 = 6.

Total number of p electrons =6+6=12= 6 + 6 = 12.

Answer: 66 and 1212
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