Revision of metals and non metals

04.08.2020
08:49:17

Dear students, great morning
Today we will revise the properties of non metals in pg no : 82 to 83
The important points are
Properties of non metals :
1. They are generally gases..
2. They have low melting and boiling point
3. They do not conduct heat or Electricity.
4.non- metals solids are brittle
5.examples: sulfur, oxygen, helium and chlorine.
For better understanding watch the video