Which one of the following non-metals is not a poor conductor of electricity?

1. Non-metals are generally poor conductors of electricity (insulators). 2. Sulphur, Bromine, and Phosphorus are typical non-metals and poor conductors. 3. Selenium is a metalloid or non-metal (depending on classification) which exhibits photoconductivity and is a semiconductor. Its conductivity increases when exposed to light and is generally better than typical non-metals, though still much lower than metals. Among the options, it is the least poor conductor (or not a poor conductor in a relative sense).