Periodic Table of the Elements

Groups

When Dmitri Mendeleev created the periodic table in the late 19th century, he grouped elements by atomic weight. When grouped by weight, the behavior of the elements appeared to occur in regular intervals or periods. The columns of the modern periodic table represent groups of elements and rows represent the periods. The groups are numbered one through 18. Elements in the same group can be expected to behave in a similar way because they have the same number of electrons in their outermost shell.

Note:The elements which are present in Dark Brown color box are Groups

All

Metals

NonMetals

states

Groups

Periods

1 ^IA																	18 ^VIIIA
₁ H ^Hydrogen	2 ^IIA											13 ^IIIA	14 ^IVA	15 ^VA	16 ^VIA	17 ^VIIA	₂ He ^Helium
₃ li ^lithium	₄ Be^Beryllium											₅ B ^Boron	₆ C ^Carbon	₇ N ^Nitrogen	₈ O ^Oxygen	₉ F ^Fluorine	₁₀ Ne ^Neon
₁₁ Na ^sodium	₁₂ Mg ^Magnesium	3 ^IIIB	4 ^IVB	5 ^VB	6 ^VIB	7 ^VIIB	8 ^VIIIB	9 ^VIIIB	10 ^VIIIB	11 ^IB	12 ^IIB	₁₃ Al ^Aluminium	₁₄ Si ^Silicon	₁₅ P ^Phosphorus	₁₆ S ^Sulfur	₁₇ Cl ^Chlorine	₁₈ Ar ^Argon
₁₉ K ^Potassium	₂₀ Ca ^Calcium	₂₁ Sc ^Scandium	₂₂ Ti ^Titanium	₂₃ V ^Vanadium	₂₄ Cr ^Cromium	₂₅ Mn ^Manganesse	₂₆ Fe ^Iron	₂₇ Co ^Cobalt	₂₈ Ni ^Nickel	₂₉ Cu ^Copper	₃₀ Zn ^Zinc	₃₁ Ga ^Gallium	₃₂ Ge ^Germanium	₃₃ Ar ^Arsenic	₃₄ Se ^Selanium	₃₅ Br ^Bromine	₃₆ Kr ^Krypton
₃₇ Rb ^Rubidium	₃₈ Sr ^Strontium	₃₉ Ca ^Yttrium	₄₀ Zr ^Zirconium	₄₁ Nb ^Niobium	₄₂ Mo ^Molybdenum	₄₃ Tc ^Tecnetium	₄₄ Ru ^Ruthenium	₄₅ Rh ^Rhodium	₄₆ Pd ^Palladium	₄₇ Ag ^Silver	₄₈ Cd ^Cadnium	₄₉ In ^Indium	₅₀ Sn ^Tin	₅₁ Sb ^Antimony	₅₂ Te ^Tellurium	₅₃ I ^Iodine	₅₄ Xe ^Xenon
₅₅ Cs ^Caesium	₅₆ Ba ^Barium	₅₇ la ^Lanthan...	₇₂ Hf ^Hafnium	₇₃ Ta ^Tantalum	₇₄ W ^Tungsten	₇₅ Re ^Rhenium	₇₆ Os ^Osmium	₇₇ Ir ^Iridium	₇₈ Pt ^Platinum	₇₉ Au ^Gold	₈₀ Hg ^Mercury	₈₁ Tl ^Thallium	₈₂ Pb ^Lead	₈₃ Bi ^Bismuth	₈₄ Po ^Polonnium	₈₅ At ^Astatine	₈₆ Rn ^Radon
₈₇ Fr ^Francium	₈₈ Ra ^Radium	₈₉ Ac ^Actinium	₁₀₄ Rf ^Rutherfo..	₁₀₅ Db ^Dubnium	₁₀₆ Sg ^Seaborgium	₁₀₇ Bh ^Bohrium	₁₀₈ Hs ^Hassiumy	₁₀₉ Mt ^Meitnerium	₁₁₀ Ds ^Damstadium	₁₁₁ Rg ^Roentgenium	₁₁₂ Cn ^Copemicium	₁₁₃ Nh ^Nihonium	₁₁₄ Fl ^Flerovium	₁₁₅ Mc ^Moscovium	₁₁₆ Lv ^Livermorium	₁₁₇ Ts ^Tennessi..	₁₁₈ Og ^Oganesson

			₅₈ Ce ^Cerium	₅₉ Pr ^Praseodium	₆₀ Nd ^Neodymium	₆₁ Pm ^Promethium	₆₂ Sm ^Samarium	₆₃ Eu ^Europium	₆₄ Gd ^Gadolini..	₆₅ Tb ^Terbium	₆₆ Dy ^Dysprosium	₆₇ Ho ^Holmium	₆₈ Er ^Erbium	₆₉ Tm ^Thulium	₇₀ Yb ^Ytterbium	₇₁ Lu ^Lutetium
			₉₀ Th ^Thorium	₉₁ Pa ^Protactinium	₉₂ U ^Uranium	₉₃ Np ^Neptunium	₉₄ Pu ^Plutonium	₉₅ Am ^Americium	₉₆ Cm ^Curium	₉₇ Bk ^Berkelium	₉₈ Cf ^Californi..	₉₉ Es ^Einstenium	₁₀₀ Fm ^Fermium	₁₀₁ Md ^Mendelevium	₁₀₂ No ^Nobelium	₁₀₃ Lr ^Lawrencium