Question

List first 20 elements

Answer 1

Explanation:

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.)Aluminum (Al)

14.)Silicon (Si)

15.)Phosphorus (P)

16.)Sulfur (S)

17.)Chlorine (Cl)

18.)Argon (Ar)

19.)Potassium (K)

20.)Calcium (Ca)

I hope it's helpful!!

Answer 2

Explanation:

Hydrogen (H)

Helium (He)

Lithium (Li)

Beryllium (Be)

Boron (B)

Carbon (C)

Nitrogen (N)

Oxygen (O)

Fluorine (F)

Neon (Ne)

Sodium (Na)

Magnesium (Mg)

Aluminum (Al)

Silicon (Si)

Phosphorus (P)

Sulfur (S)

Chlorine (Cl)

Argon (Ar)

Potassium (K)

Calcium (Ca)

I hope it's helpful!!