Group 7

Cards (12)

what is another name for the group 7 metals?
Halogens
what are the group 7 elements
fluorine
Chlorine
Bromine
Iodine
Astatine
what do all the group 7 elements have in common?
They all have seven electrons in the outer shell
halogens react with metals to form ionic compounds
What changes in a halogens name when they react?
Ending goes from ine to ide
state the trend in reactivity in group 7?
Reactivity decreases as you go down the group
explain why reactivity decreases when you go down group 7?
as the outer shell electron is progressively getting further away from the nucleus as the electron gets bigger weakening the force of attraction between the negative electrons and positive protons making it harder to gain an electron
what do group 7 elements naturally exist as?
Diatomic molecules
State the trend in melting and boiling points in group 7
It increases as you go down
State what displacement is
Is when a more reactive element takes the place of a less reactive element from a compound can happen in halogens
what colour does iodine make when it is displaced?
Brown
what colour does bromine make when it is displaced?
Yellow/orange