Groups In The Periodic Table

Question 1

Properties of group 1

Answer 1

All have one outer electron
Similar chemical properties
Low melting and boiling points
Very soft
Alkali metals form ionic compounds
Usually lose their outer electron to form a 1+ ion with a stable structure
Alkali metals react vigorously with water

Question 2

Properties of group 7

Answer 2

Known as halogens
7 electrons in outer shell
Similar chemical properties
Diatomic molecules - share 1 pair of electrons in covalent bond
Melting and boiling points increase as you go down group
Reactivity decreases when going down group
Will react vigorously with metals and hydrogen
A more reactive halogen will displace a less reactive one in a displacement reaction

Question 3

Properties of group 0

Answer 3

Called Noble Gases
All colourless at room temp
Made up of single atoms
Dont react much
Non flammable