Chemistry - Halogens

which group are halogens in

7

the gases they release are what to humans

poisonous

describe fluorine

a yellow, poisonous gas that is very reactive

describe chlorine

a pale yellow-green, poisonous and dense gas that is reactive. it is pale green in a solution.

describe bromine

a red-brown, dense, volatile liquid. In a solution it is orange.

describe iodine

a shimmery, crystalline, grey solid that sublimes to form a purple vapour. In a solution it is dark brown.

what is the most reactive halogen

fluorine

which halogen has the highest melting and boiling point

iodine

when halogens and metals react, they form what type of compound

ionic compounds

when halogens react with non metals, what type of compound do they form.

simple molecular covalent

how does a displacement reaction occur between halogens

when a more reactive halogen displaces a less reactive halogen in an aqueous solution