very high melting point gas state at room temperature good conductor of electric current extremely brittle solid at room temperature
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: What physical property is characteristic of all of the elements in the group located in the rightmost column of the periodic table?
Possibilities:
- very high melting point
- gas state at room temperature
- good conductor of electric current
- extremely brittle solid at room temperature

gas state at room temperature