1 (1A) 2 (2A) 16 (6A) 18 (8A)
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: According to the periodic table, argon is found in what column?
Possibilities:
- 1 (1A)
- 2 (2A)
- 16 (6A)
- 18 (8A)

18 (8A)