C4.1.2 - The Group 7 Metals (Halogens) Flashcards
Where are the elements in Group 7 placed on the Periodic Table?
In a vertical column on the right side of the Periodic Table
Describe the properties of the halogens.
Brittle
Poor conductors of electricity
Describe the trends of the halogens.
Density increases as you go down
Melting and boiling points increase as you go down
Reactivity decreases as you go down
How strong are the intermolecular forces in halogens?
Weak
What type of molecules are molecules made of?
Diatomic
Name the colours of the halogens.
Fluorine - yellow
Chlorine - green
Bromine - orange/brown
Iodine - purple
What do halogens create when reacting with metals?
Salts
How vigorously do halogens react with alkali metals?
Very vigorously
Why do halogens have similar chemical properties?
They all have 7 electrons in the outer shell
How many electrons do halogens gain or lose in reactions?
Gain 1 electron to complete outer shell and create a negatively charged ion
Name all of the halogens.
Fluorine, chlorine, Bromine, Iodine, Astatine, tennessine
