Hawaii Tribune-Herald welcomes and encourages letters from readers. The guidelines are: • Letters should be no longer than 300 words, be signed and include a phone number to verify authorship. • ...

When chlorine (as a gas or dissolved in water) is added to sodium bromide solution, the chlorine takes the place of the bromine. Because chlorine is more reactive than bromine, it displaces ...

This table summarises some of the properties and uses of three halogens: ...