Question

NAME ATOMIC NUMBER UP TO 1-20​

Answer 1

Answer:

15

Explanation:

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Answer 2

Here's your answer of atomic number 1-20:-

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)