The number of valence electrons in the nitrite ion is
A)22.
B)16.
C)23.
D)18.
E)24.

Question

Quizplus · Accepted Answer

To find the number of valence electrons in the nitrite ion (NO2-), we need to add the valence electrons of each atom and then subtract one electron for the extra negative charge. Nitrogen (N) has 5 valence electrons, and each oxygen (O) has 6 valence electrons. Therefore, the total number of valence electrons in the nitrite ion is 5 + 2 × 6 - 1 = 16. Therefore, the answer is D.

The Number of Valence Electrons in the Nitrite Ion Is