Question

write 1 to 20 element name from periodic table​

Answer 1

Answer:

First 20 Elements

Atomic Number Element Symbol

1 Hydrogen H

2 Helium He

3 Lithium Li

4 Beryllium Be

Answer 2

Answer:

In order of increasing atomic number, the first 20 elements and their symbols are:

Hydrogen (H)

Helium (He)

Lithium (Li)

Beryllium (Be)

Boron (B)

Carbon (C)

Nitrogen (N)

Oxygen (O)

Fluorine (F)

Neon (Ne)

Sodium (Na)

Magnesium (Mg)

Aluminum (Al)

Silicon (Si)

Phosphorus (P)

Sulfur (S)

Chlorine (Cl)

Argon (Ar)

Potassium (K)

Calcium (Ca)