2.1.4 The Elements of Group 7 Flashcards
By what name are the elements of group 7 sometimes called?
The halogens
Name all of the elements of group 7
Fluorine Chlorine Bromine Iodine Astatine
Give some of the physical properties of the group 7 elements.
Non metals so:
Low melting/boiling points
Do not conduct electricity
Iodine is brittle
Identify the element: F
Fluorine
Identify the element: Cl
Chlorine
Identify the element: Br
Bromine
Identify the element: I
Iodine
Identify the element: At
Astatine
What happens to the melting point of the group 7 elements as you move down the group?
It increases
What happens to the colour of the group 7 elements as you move down the group?
They get darker
What happens to the reactivity of the group 7 elements as you move down the group?
The elements become less reactive as you move down the group
Iron + Fluorine –> ?
Iron Fluoride
Iron + Chlorine –> ?
Iron Chloride
Iron + Bromine –> ?
Iron Bromide
What is a displacement reaction?
When a more reactive element takes the place of a less reactive element in a compound
