Question

give me the first 20 elements by sequence​

Answer 1

H–hydrogen

He–Helium

Li–lithium

Be–Berilium

B–Boron

C–Carbon

N–Nitrogen

O–Oxygen

F–fluorine

Ne–Neon

Na–Sodium

Mg–Magnesium

Answer 2

Answer:

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

i hope it's help you!

Mark me as brilliant!

And like my ans!