Halogens Flashcards
halogens are found in which group
group 7
list 2 general knowledge thingies
they are very poisonous non metals
exist as diatomic molecules
list all halogens in order
fluorine F2 chlorine Cl2 bromine Br2 iodine I2 astatine At2
describe reactivity down the group
reactivity decreases down the group
describe colours down the group
colours get darker down the group
describe the melting and boiling points down the group
melting and boiling points increase down the group
what colour is fluorine and what state is it at r.t.p
fluorine is a pale yellow and exists as a gas
what colour is chlorine and what state is it at rtp
chlorine is green and exists in a gaseous form
what colour is bromine and what is its state at rtp
bromine is a reddish-brown and is liquid at room temperature
what colour is iodine and what state at rtp
idoine is a greyish- blalck and solid at room temperature
which are the weakest and strongest oxidants in the group
iodine is the strongest oxidant whereas astatine is the weakest oxidant but it is the ooposite for strong and weak reductants
which reaction takes place with halogens and group 1 elements
displacement reactions
in a displacement reaction the stronger oxidising halogen will displace the weaker halogen. What are the products of Cl2(g) + 2KBr(aq)
——> 2KCl(aq) + Br2(aq)
what do group 1 elements and halogens form
they form salts called halides
halogens gain…
hence they are…
halogens are therefore…
electrons
reduced
oxidants
