Which of the following non-metals is the best conductor of electricity?
Phosphorus
Fluorine
Graphite
Bromine
Graphite is the best conductor of electricity because of its structure. Like metals it contains delocalised electrons free to conduct electricity.
The non-metal which exists in the liquid state at room temperature is :
(a) fluorine
(b) chlorine
(c) bromine
(d) iodine