Here are few important elements of the periodic table :
Lightest element : Hydrogen
Strongest oxidising element : F
Strongest Reducing Element : Fr
Elements which have no core electrons : H and He
Elements which is stored in water : White Phosphorus(P4)
Elements which are stored in Kerosene Oil : Na, K, Rb, Cs
Least electropositive element : F
Least electronegative element : Fr
Elements of Highest Electon Affinity : Cl
Elements of Lowest Electron Affinity : Fr
Elements of Highest Covalency 8 : Ru, Os
Elements of Highest Ionization Potential : He
Elements of Lowest Ionization Potential : Fr
Element of Largest radius : Cs
Element of Smallest Radius : H
Rarest element of Earth's Crust : At
Most abundant element of Earth's Crust : O
Lightest Metal : Li
Heaviest Metal : Os
Most Malleable Metal : Au
Most Reactive Metal : Fr
Most Reactive Non-metal : F
Noble Metal : Ru, Rh, Pd, Os, Ir, Pt, Au
Metal which shows Highest Valency of 9 : Pu
Metal used in Overhead Electric wires ; Al
Liquid Metals : Cs, Fr, Hg, Ga
The only liquid non-metal : Br
Amphoteric metals : Zn, Al, Sn, Pb, As, Cr, Po
Coinage Metals : Cu, Ag, Au
Volatile Metals : Zn, Cd, Hg
The only liquid non-metal : Br
Neutral Gases : H, N, O, CO, N
2O, NO, PH
3 White Gold : Pt
Liquid Gold : Petrol
Mosaic of Gold : SnS
2 Rolled Gold : Alloy of Cu and Al
Gold Fulominate : H
2N-Au=NH
Liquid Silver : Hg
Largest Cation : Cs
+Smallest Cation : H
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