Question

periodic table 1 to 20

Answer 1

Periodic table.
H

hydrogen

He

helium

Li

lithium

Be

beryllium

B

boron

C

carbon

N

nitrogen

O

oxygen

F

fluorine

Ne

neon

Na

sodium

Mg

magnesium

Al

aluminum

Si

silicon

P

phosphorus

S

sulfur

Cl

chlorine

Ar

argon

K

potassium

Ca

calcium

Answer 2

Answer:

Step-by-step explanation:

1.  Hydrogen (H)

2.  Helium (He)

3.  Lithium (Li)

4.  Beryllium (Be)

5.  Boron (B)

6.  Carbon (C)

7.  Nitorgen(N)

8.  Oxygen(O)

9.  Florine(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)