Group 7 C1 Flashcards
1
Q
What is the name given to the
elements in group 7?
A
Halogens
2
Q
Do the Group 7 elements exist as atoms or molecules?
A
Molecules (small groups of atoms). They exist in pairs.
3
Q
How do Group 7 elements have similar properties
A
All have 7 electrons in outer shell
4
Q
What is the trend in melting and boiling point as you go down Group 7?
A
Both Increases
5
Q
What is the trend in reactivity as you go down Group 7
A
Reactivity Decreases
6
Q
Describe how displacement reactions can be used to show the relative reactivity of Halogens
A
A more reactive halogen can displace a less reactive halo- gen from an aqueous solution of its salt.
E.g.
chlorine + potassium bromide —>
potassium chloride + bromine
Because chlorine is more reactive than bromine.
