Question

write symbols of elements with atomic number 1 to 20​

Answer 1

1 - H - Hydrogen

2 - He - Helium

3 - Li - Lithium

4 - Be - Beryllium

5 - B - Boron

6 - C - Carbon

7 - N - Nitrogen

8 - O - Oxygen

9 - F - Fluorine

10 - Ne - Neon

11 - Na - Sodium

12 - Mg - Magnesium

13 - Al - Aluminum

14 - Si - Silicon

15 - P - Phosphorus

16 - S - Sulfur

17 - Cl - Chlorine

18 - Ar - Argon

19 - K - Potassium

20 - Ca - Calcium

Answer 2

Answer:

H -1

He-2

Li-3

Be-4

B-5

C-6

N-7

O-8

F-9

Ne-10

Na-11

Mg-12

Al-13

Si-14

P-15

S-16

Cl-17

Ar-18

K-19

Ca-20