Question

write 20 atomic number symbol and name of element​

Answer 1

Ca..= 20

calcium

I hope help you

Answer 2

These are the first 20 elements, listed in order:

⬇️⬇️⬇️⬇️⬇️⬇️

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