non-metal- hydrogen

1. history and discovery

1.1. in 1671, Robert Boyle discovered and described the reaction between iron filings and dilute acids, which results in the production of hydrogen gas.

2. elctronic configuration

2.1. 1

3. Atomic model of hydrogen

4. special characteristic

4.1. it is the lightest element

5. introduction

5.1. Hydrogen is a chemical element with symbol H and atomic number 1.

6. physical properties

6.1. colourless

6.2. odourless

6.3. tasteless

6.4. non-toxic

6.5. highly combustible

6.6. Color colorless

6.7. Phase (at STP) gas

6.8. Melting point 13.99 K ​(−259.16 °C, ​−434.49 °F)

6.9. Boiling point 20.271 K ​(−252.879 °C, ​−423.182 °F)

6.10. Density (at STP) 0.08988 g/L

7. use

7.1. its used for filling observation balloons