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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) 4B) 6C) 8D) 10
A) 4
B) 6
C) 8
D) 10
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.
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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