It seems like the table you've mentioned is not visible in your message. However, if you're trying to identify an unknown atom based on elements listed (Sulfur, Silicon, Nitrogen, Phosphorus), here are some key points:
- Sulfur (S) has an atomic number of 16.
- Silicon (Si) has an atomic number of 14.
- Nitrogen (N) has an atomic number of 7.
- Phosphorus (P) has an atomic number of 15.
If you can provide more specific information or details about the composition or context of the unknown atom, I would be better able to assist you!