nitrogen, arsenic, and antimony carbon, selenium, and iodine silicon, sulfur, and germanium silicon, sulfur, and chlorine
I gave my students this multiple choice question: Which set of elements have chemical properties similar to those of phosphorus?

Only one answer is correct among these 4 choices:
- nitrogen, arsenic, and antimony
- carbon, selenium, and iodine
- silicon, sulfur, and germanium
- silicon, sulfur, and chlorine

Could you tell me which one is correct?

nitrogen, arsenic, and antimony