CBSE Class 9 Science Question 17 of 34

Structure of the Atom — Question 17

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17
Question

Question 17

Number of valence electrons in Cl- ion are

  1. 16
  2. 8
  3. 17
  4. 18
Answer

8

Reason — The electronic distribution of Cl is 2, 8, 7. There are 7 valence electrons in chlorine. It gains one electron and forms Cl-. Hence, its valency is 8.