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The number of valence electrons in the O 2 − ion is ______. A) 4 B) 6 C) 8 D) 10

The number of valence electrons in the 

O2−

 ion is ______.

A) 4

B) 6

C) 8

D) 10

 

Grade:12

2 Answers

Vikas TU
14149 Points
3 years ago
Dear student 
Oxygen has atomic no. 8. Its electronic configuration becomes 2,8,6 i.e it has 6 valence electrons. In O2−
 there are two more electrons. Hence number of valence electrons in the O2− is 8.
Vikas Amritiya
askIITians Faculty 230 Points
3 years ago
 
Oxygen has atomic no. 8. Its electronic configuration becomes 2,8,6 i.e it has 6 valence electrons. In O2−
 there are two more electrons. Hence number of valence electrons in the O2− is 8.
 

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