Question

name of first 20 elements​

Answer 1

Hydrogen (H)

Helium (He)

Lithium (Li)

Beryllium (Be)

Boron (B)

Carbon (C)

Nitrogen (N)

Oxygen (O)

Fluorine (F)

Neon (Ne)

Sodium (Na)

Magnesium (Mg)

Aluminium (Al)

Silicon (Si)

Phosphorus (P)

Sulfur (S)

Chlorine (Cl)

Argon (Ar)

Potassium (K)

Calcium (ca)

Answer 2

Answer:

Atomic Number Element Symbol

1 Hydrogen H

2 Helium He

3 Lithium Li

4 Beryllium. Be

5. Boron B

6. Carbon C

7. Nitrogen. N

8 Oxygen O

9 Fluorine. F

10 Neon. Ne

11. Sodium. Na

12 Magnesium Mg

13 Aluminium. Al

14 Silicon Si

15 Phosphorus P

16 Sulfur. S

17. Chlorine. Cl

18 Argon. Ar

19 Potassium K

20 Calcium. Ca

Explanation:

hope it's helpful please mark as brainliest answer and thank my answers