use of elements

1. jewellery, excellent electricity conductor, electroplating of inert metal but too expensive
2. electrode, fuel, poor conductor of electricity
3. firework, production of NaOH,NaCl
4. produce semi-conducting material used in computer, glass production
5. thermometer, electroplating, catalyst of the production of NaOH, 印泥, mercury lamp
6. liquid fuel
7. good conductor of electricity, electroplating
8. filling light bulb
9. balloon, hot-air balloon
10. argon lamp

1.jewllery
2.electrode
3.street lamp
4.computer chip
5.thermometer
6.reducing agent in chemical industry/fuel
7.electrical wire
8.fill inside light bulb
9.ballon
10.fill inside light bulb