Periodic table of the elements

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The periodic table, as we know it today, is an array of the elements arranged in order of increasing atomic number. When the elements are arranged in order of increasing atomic number, the physical and chemical properties of the elements vary periodically at regular intervals. This relationship is known as the periodic law.

CarbonSiliconGermaniumTinLeadNitrogenPhosphorusArsenicAntimonyBismuthOxygenSulfurSeleniumTelluriumPoloniumFluorineChlorineBromineIodineAstatineHeliumNeonArgonKryptonXenonRadonBoronAluminumGalliumIndiumThalliumHydrogenLithiumSodiumPotassiumRubidiumCesiumFranciumBerylliumScandiumYttriumLanthanumActiniumTitaniumZirconiumHafniumRutherfordiumMagnesiumCalciumStrontiumBariumRadiumVanadiumNiobiumTantalumDubniumChromiumMolybdenumTungstenSeaborgiumManganeseTechnetiumRheniumBohriumIronRutheniumOsmiumHassiumCobaltRhodiumMeitneriumNickelPalladiumPlatinumCopperSilverGoldZincCadmiumMercuryIridiumCeriumPraseodymiumNeodymiumPromethiumSamariumEuropiumGadoliniumTerbiumDysprosiumHolmiumErbiumThuliumYtterbiumLutetiumThoriumProtactiniumUraniumNeptuniumPlutoniumAmericiumCuriumBerkeliumCaliforniumEinsteiniumFermiumMendeleviumNobeliumLawrenciumDarmstadtiumRoentgeniumCoperniciumPeriodicTable 800.jpg

Periods

7 rows

There are seven periods of elements in the periodic table.

Each period has a variation in physical and chemical properties. It starts with reactive metals on the left side and ends with the nonreactive noble gas on the right side.

The number of the period gives the number of the outermost principal energy level that the valence electron(s) occupies. This is best illustrated by reviewing the arrangement of electrons in principal energy levels and the Bohr diagrams.

Groups

18 columns

There are 18 vertical columns of elements in the periodic table. Each column is called a group of elements, or a family of elements. Elements in the same family or group tend to have similar properties.

There are two formats in labeling the groups on the periodic table. In some books (and on the Internet) you will find the "1-18" numbering sequence. In other books, you will find the more popular "1-8 A and B" group labeling system. In this course, we will use the latter system of labeling.

"A" elements The Representative Elements Group IA
Alkali metals
Group IIA
Alkaline-earth metals
Group VIIA
Halogens
Group VIIIA
Noble gases or Inert gases
"B" elements
  1. The Transition Elements
  2. Inner Transition Metals

Elements

Actinium Bismuth Chlorine Erbium Hassium Lawrencium Neodymium Phosphorus Rhenium Silicon Thorium Zinc
Aluminum Bohrium Chromium Europium Helium Lead Neon Platinum Rhodium Silver Thulium Zirconium
Americium Boron Cobalt Fermium Holmium Lithium Neptunium Plutonium Roentgenium Sodium Tin
Antimony Bromine Copernicium Fluorine Lutetium Lutetium Nickel Polonium Rubidium Strontium Titanium
Argon Cadmium Copper Francium Indium Magnesium Niobium Potassium Ruthenium Sulfur Tungsten
Arsenic Calcium Curium Gadolinium Iodine Manganese Nitrogen Praseodymium Rutherfordium Tantalum Uranium
Astatine Californium Darmstadtium Gallium Iridium Meitnerium Nobelium Promethium Samarium Technetium Vanadium
Barium Carbon Dubnium Germanium Iron Mendelevium Osmium Protactinium Scandium Tellurium Xenon
Berkelium Cerium Dysprosium Gold Krypton Mercury Oxygen Radium Seaborgium Terbium Ytterbium
Beryllium Cesium Einsteinium Hafnium Lanthanum Molybdenum Palladium Radon Selenium Thallium Yttrium


Content suitability

BCIT courses: CHEM 0011