In the given 15 group elements which elements can form a trihalide?
Nitrogen
Arsenic
Phosphorus
Antimony
Phosphorus can form a trihalide, which is a compound containing three halogen atoms and one phosphorus atom, such as phosphorus trichloride . Hence option 3 is the correct answer.
Option(1) Phosphorus can form a trihalide, which is a compound containing three halogen atoms and one phosphorus atom, such as phosphorus trichloride . Hence option 1 is incorrect.
Option(2) Phosphorus can form a trihalide, which is a compound containing three halogen atoms and one phosphorus atom, such as phosphorus trichloride . Hence option 2 is incorrect.
Option(4) Phosphorus can form a trihalide, which is a compound containing three halogen atoms and one phosphorus atom, such as phosphorus trichloride . Hence option 4 is incorrect.