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The chemical species having same number of electrons in the outermost and penultimate shell is (A) O2 − (B) Na + (C) Cl − (D) Al 3+



The chemical species having same number of electrons in the outermost and penultimate shell is


(A)        O2


(B)        Na+


(C)        Cl


(D)        Al3+


Grade:11

1 Answers

Shane Macguire
30 Points
7 years ago
  1. Configuration of Cl ion is 1s22s22p63s23p6

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