Question

which model correctly represents the electron dot diagram of antimony?

Explanation:

Step1: Find Sb's valence electrons

Antimony (Sb) is in group 15, so it has 5 valence electrons.

Step2: Eliminate wrong options

Options 2 and 3 use At (Astatine), so they are invalid. Option 1 has 4 valence electrons, which is incorrect. Option 4 has 5 valence electrons, matching Sb's valence count.

Answer:

D. $\dot{\underset{\cdot \cdot}{Sb}} \dot{}$ (the fourth option with Sb and 5 valence electrons)