Question

1 to 20
elements name

Answer 1

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. Aluminum (Al)
14. Silicon (Si)
15. Phosphorus (P)
16. Shulphur (S)
17. Chlorine (Cl)
18. Argon (Ar)
19. Potassium (K)
20. Calcium (Ca)

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Answer 2

The periodic table is an arrangement of elements based on their atomic numbers.

This was created by Henry Moosely

The law of this table is

"The elements are a periodic function of thier atomic number "

$\mathbb{\blue{FIRST\:TWENTY\:ELEMENTS}}$

✔️Hydrogen (H)

✔️Helium (He)

✔️Lithium (Li)

✔️Bereyllium (Be)

✔️Boron (B)

✔️Carbon(C)

✔️ Nitrogen (N)

✔️ Oxygen (O)

✔️ Fluorine (F)

✔️Neon (Ne)

✔️ Sodium (Na)

✔️ Magnesium (Mg)

✔️Aluminum (Al)

✔️Silicon (Si)

✔️Phosphorus (P)

✔️ Sulphur (S)

✔️Chlorine (Cl)

✔️Argon (Ar)

✔️Pottasium (K)

✔️Calicium (Ca)