MOST COMMON ELEMENTS IN THE UNIVERSE:-

1. HYDROGEN - H - 750,000 parts per million

2. HELIUM - He - 230,000 parts per million  

3. OXYGEN - O - 10,000 parts per million  

4. CARBON - C - 5,000 parts per million  

5. NEON - Ne - 1,300 parts per million 

6. IRON - Fe - 1,100 parts per million 

7.NITROGEN - N- 1,000 parts per million

 8. SILICON - Si - 700 parts per million

9. MAGNESIUM - Mg - 600 parts per million

10. SULFUR - S- 500 parts per million

MOST COMMON ELEMENTS IN THE EARTH'S CRUST :-

 

1. OXYGEN - O - 461, 000 parts per million

 

2. SILICON - Si - 282,000 parts per million

3. ALUMINIUM - Al - 82,300 parts per million

4. IRON - Fe - 56,300 parts per million

5. CALCIUM - Ca - 41,500 parts per million

6. SODIUM - Na - 23,600 parts per million

7. MAGNESIUM - Mg - 23,300 parts per million

8. POTASSIUM - K - 20,900 parts per million

9. TITANIUM - Ti - 5,650 parts per million

10. HYDROGEN - H - 1,400 parts per million

MOST COMMON ELEMENTS IN THE OCEANS:-

1. OXYGEN (combined in water) - O 857,000,000 tonnes / sq km