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Irregular Elements

Elements whose symbols are not the first to letters of their name.
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Sodium
Na
Magnesium
Mg
Chlorine
Cl
Chromium
Cr
Manganese
Mn
Iron
Fe
Copper
Cu
Zinc
Zn
Arsenic
As
Rubidium
Rb
Strontium
Sr
Zirconium
Zr
Niobium
Nb
Technetium
Tc
Palladium
Pd
Silver
Ag
Cadmium
Cd
Tin
Sn
Antimony
Sb
Cesium
Cs
Neodymium
Nd
Promethium
Pm
Samarium
Sm
Gadolinium
Gd
Terbium
Tb
Thulium
Tm
Ytterbium
Yb
Hafnium
Hf
Rhenium
Re
Platinum
Pt
Gold
Au
Mercury
Hg
Thallium
Tl
Lead
Pb
Astatine
At
Radon
Rn
Protactinium
Pa
Neptunium
Np
Plutonium
Pu
Curium
Cm
Berkelium
Bk
Californium
Cf
Einsteinium
Es
Fermium
Fm
Mendelevium
Md
Lawrencium
Lr
Rutherfordium
Rf
Dubnium
Db
Seaborgium
Sg
Bohrium
Bh
Hassium
Hs
Meitnerium
Mt
Darmstadtium
Ds
Roentgenium
Rg
Copernicium
Cn
Ununtrium
Uut