Question

write the symbols for the following elements. 1. oxygen 2. hydrogen 3. chlorine 4. sodium 5. fluorine 6. carbon 7. helium 8. nitrogen 9. copper 10. sulfur 11. magnesium 12. manganese 13. neon 14. bromine 15. phosphorus 16. silver 17. lead 18. iron 19. calcium 20. potassium

Explanation:

Step1: Recall element symbols

Use standard chemical - element symbol notations.

1. Oxygen: O
2. Hydrogen: H
3. Chlorine: Cl
4. Sodium: Na
5. Fluorine: F
6. Carbon: C
7. Helium: He
8. Nitrogen: N
9. Copper: Cu
10. Sulfur: S
11. Magnesium: Mg
12. Manganese: Mn
13. Neon: Ne
14. Bromine: Br
15. Phosphorus: P
16. Silver: Ag
17. Lead: Pb
18. Iron: Fe
19. Calcium: Ca
20. Potassium: K

Answer:

1. O
2. H
3. Cl
4. Na
5. F
6. C
7. He
8. N
9. Cu
10. S
11. Mg
12. Mn
13. Ne
14. Br
15. P
16. Ag
17. Pb
18. Fe
19. Ca
20. K