Question

name first 20 element in the periodic tble with their mass number

Answer 1

1.Hydrogen
Helium
lithium
bereliyium
boron
carbon
nitrogen
oxygen
flourine
neon
sodium
magnesium
aluminium
silicon
phosphorous
sulphur
chlorine
argon
potassium
calcium

Answer 2

The chemical elements of
the periodic chart sorted by:Atomic number

Name chemical element

Symbol- Name alphabetically1HydrogenH- Atomic number2HeliumHe- Symbol3LithiumLi- Atomic Mass4BerylliumBe- Electronegativity5BoronB- Density6CarbonC- Melting point7NitrogenN- Boiling point8OxygenO- Vanderwaals radius9FluorineF- Year of discovery10NeonNe- Inventor surname11SodiumNa- Elements in earthcrust12MagnesiumMg- Elements in human body13AluminumAl- Covalenz radius14SiliconSi- Ionization energy15PhosphorusP

For chemistry students and teachers: The tabular chart on the right is arranged by Atomic number.

The first chemical element is Hydrogen and the last is Ununoctium.

Please note that the elements do not show their natural relation towards each other as in the Periodic system. There you can find the metals, semi-conductor(s), non-metal(s), inert noble gas(ses), Halogens, Lanthanoides, Actinoids (rare earth elements) and transition metals.

16SulfurS17ChlorineCl18ArgonAr19PotassiumK20CalciumCa21ScandiumSc22TitaniumTi23VanadiumV24ChromiumCr25ManganeseMn26IronFe27CobaltCo28NickelNi29CopperCu30ZincZn31GalliumGa32GermaniumGe33ArsenicAs34SeleniumSe35BromineBr36KryptonKr37RubidiumRb38StrontiumSr39YttriumY40ZirconiumZr41NiobiumNb42MolybdenumMo43TechnetiumTc44RutheniumRu45RhodiumRh46PalladiumPd47SilverAg48CadmiumCd49IndiumIn50TinSn51AntimonySb52TelluriumTe53IodineI54XenonXe55CesiumCs56BariumBa57LanthanumLa58CeriumCe59PraseodymiumPr60NeodymiumNd61PromethiumPm62SamariumSm63EuropiumEu64GadoliniumGd65TerbiumTb66DysprosiumDy67HolmiumHo68ErbiumEr69ThuliumTm70YtterbiumYb71LutetiumLu72HafniumHf73TantalumTa74TungstenW75RheniumRe76OsmiumOs77IridiumIr78PlatinumPt79GoldAu80MercuryHg81ThalliumTl82LeadPb83BismuthBi84PoloniumPo85AstatineAt86RadonRn87FranciumFr88RadiumRa89ActiniumAc90ThoriumTh91ProtactiniumPa92UraniumU93NeptuniumNp94PlutoniumPu95AmericiumAm96CuriumCm97BerkeliumBk98CaliforniumCf99EinsteiniumEs100FermiumFm101MendeleviumMd102NobeliumNo103LawrenciumLr104RutherfordiumRf105DubniumDb106SeaborgiumSg107BohriumBh108HassiumHs109MeitneriumMt110DarmstadtiumDs111RoentgeniumRg112CoperniciumCn113NihoniumNh114FleroviumFl115MoscoviumMc116LivermoriumLv117TennessineTs118OganessonOg

Click here: for a schematic overview of the periodic table of elements in chart form

 Do you need to know the weight of some molecules? Try our Molecular Weight Calculator!

Please report any accidental mistake in the above statistics on chemical elements

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