Question

which are Hydrogen and oxygen form 1 to 20 elements from periodic elements and there name also please with name also ​

Answer 1

Answer: The first 20 elements and their symbols are:

Hydrogen (H)

Helium (He)

Lithium (Li)

Beryllium (Be)

Boron (B)

Carbon (C)

Nitrogen (N)

Oxygen (O)

Explanation: mark me as the brainiest ans

Answer 2

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)Sulphur (S)

17)Chlorine (Cl)

18)Argon (Ar)

19)Potassium (K)

20)Calcium (Ca)