Question

name the metal ,metalloids and non metals in the first 20 elements

Answer 1

Metals: Lithium, Beryllium, Sodium, Magnesium, Aluminum, Potassium, and Calcium
Non-metals: Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorus, Sulfur, Chlorine, and Argon
Metalloids: Boron and Silicon

The elements are grouped into the different substances by color. As you can see, Lithium, Beryllium, Sodium, Magnesium, Aluminum, Potassium, and Calcium are metals out of the first 20 elements.
Hydrogen, Helium, Carbon, Nitrogen, Oxygen, Fluorine, Neon, Phosphorus, Sulfur, Chlorine, and Argon, are non-metals within the first 20 elements.
Boron and Silicon count as Metalloids in the Periodic Table (properties of both metals and non-metals)

Answer 2

In First 20 elements,  

Metals are :

Lithium,

Beryllium,

Sodium,

Magnesium,

Aluminum,

Potassium,

and Calcium.

Non-metals are :

Hydrogen,

Helium,

Carbon,

Nitrogen,

Oxygen,

Fluorine,

Neon,

Phosphorus,

Sulfur,

Chlorine,

and Argon.

Metalloids are :

Boron

and Silicon.

Properties of metals : Metals react with nonmetals to form ionic bonds.

Metals are a good conductor of electricity

Metals have high melting points and high boiling points.

metals are lustrous.

Metals are hard.

Physical Properties of non-metals ; Nonmetals have high ionization energies.

Electronegative in nature.

Poor conductors of electricity. ETC,

Thanks!