Question

what is the total number of electrons in the correct lewis dot formula of the sulfite ion (so₃²⁻)?
a 24
b 26
c 8
d 30

Explanation:

Step1: Determine valence electrons of each atom

• Sulfur (S) has 6 valence electrons.
• Oxygen (O) has 6 valence electrons. There are 3 oxygen atoms, so total valence electrons from oxygen: \(3\times6 = 18\)
• The ion has a charge of \(- 2\), which means 2 extra electrons.

Step2: Calculate total valence electrons

$$6+18 + 2=26$$

Answer:

B. 26