The Halogens Flashcards
What group number is the halogens?
7
What do the halogens exist as when elements?
diatomic molecules
What range of atoms will fluorine react with?
almost anything
Why can fluorine be used in toothpaste?
Takes an extra electron, making it less reactive.
What colour gas does fluorine produce?
pale yellow
What colour liquid does fluorine produce?
yellow
How many elements on the periodic table will fluorine not react with?
2
What two elements on the periodic table won’t fluorine react with?
neon, helium
What colour gas does chlorine form at room temperature?
pale green
Why can chlorine be used in pools?
it is diluted
What colour liquid is bromine at room temperature?
dark red
Bromine forms a very __________ vapour.
agresssive
Which group 7 element is one of the only liquids at room temperature?
bromine
What does iodine form at room temperature?
shiny black solid
What colour does iodine form as a gas?
purple
