First 20 and few other Periodic Table Elements

Hydrogen

(H)

Helium

(He)

Lithium

(Li)

Beryllium

(Be)

Boron

(B)

Carbon

(C)

Nitrogen

(N)

Oxygen

(O)

Fluorine

(F)

Neon

(Ne)

Sodium

(Na)

Magnesium

(Mg)

Aluminium

(Al)

Silicon

(Si)

Phosphorus

(P)

Sulfur

(S)

Chlorine

(Cl)

Argon

(Ar)

Potassium

(K)

Calcium

(Ca)

Iron

(Fe)

Nickel

(Ni)

Copper

(Cu)

Zinc

(Zn)

Silver

(Ag)

Platinum

(Pt)

Gold

(Au)

Mercury

(Hg)

Lead

(Pb)