Red Phosphorus is Used in the Manufacture of Safety Matches :
Red phosphorus is used in the manufacture of safety matches. This is due to the fact that
- It shows phosphorescence
- at ordinary temperature, it is less reactive than other varieties of phosphorus
- it cannot be converted to white phosphorus on heating
- it does not react with halogen on heating
Answer: (2) at ordinary temperature, it is less reactive than other varieties of phosphorus.