Trends

Question 1

What happens to the properties of group 7 you go down the group?

Answer 1

Atomic radius increases
Ionisation decreases
Reactivity decreases
Oxidising power increases

Question 2

What are all the elements of group 2?

Answer 2

Beryllium, Be
Magnesium, Mg
Calcium, Ca
Strontium, Sr
Barium, Ba
Radium, Ra

Question 3

How does group 2 show similar chemical and physical properties?

Answer 3

Group 2 elements show similar chemical and physical properties as they they have two electrons in their outer shell

Question 4

How do elements in group 2 react?

Answer 4

They react by losing one valence electron to form positively charged cation and in losing these electrons they ionises.

Question 5

How can you determine the reactivity of an element?

Answer 5

You can determine the reactivity of an element by how easy it ionises. The easier, the more reactive

Question 6

What happens to the properties of group 2 when you go down the group?

Answer 6

Atomic radius increases
Easier ionisation
More reactive

Question 7

What are diatomic molecules?

Answer 7

Diatomic molecules are molecules composed only TWO atoms of the same or different chemical elements

Question 8

What elements in group 7 exist as diatomic molecules?

Answer 8

Flourine, F
Chlorine, Cl
Bromine, Br
Iodine, I