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Table of Common Constants

Lasers

Series of different colored lasers. No matter the color, the speed of light is a constant. The speed of light is just one constant in this table of common constants. Credit: Pang Ka kit, Creative Commons

Here is a useful table of common constants. These physical constants appear time and again in chemistry and physics homework problems.

Why memorize them when you can just look them up.

I personally prefer to keep a sheet with these constants stuffed in the back of book. You can print up your own sheet with a PDF copy of the Table of Common Constants.

TABLE OF COMMON CONSTANTS

 Name SymbolValue
Speed of lightc299792458 m⋅s-1
Charge of an electrone1.602176565(35)×10−19 C
Universal gravitational constantG6.67384(80)×10-11 N⋅m2/kg2
Planck’s constanth6.626070040(81)×10−34 J⋅s
h4.135667662(25)×10−15 eV⋅s
Dirac’s constantħ1.054571800(13)×10−34 J⋅s
ħ6.582119514(40)×10−16 eV⋅s
Boltzmann’s constantk1.3806488(13)×10−23 J⋅K-1
8.6173324(78)×10−5 eV⋅K-1
Avogadro’s constantNA6.022140857(74)×1023 mol−1
Faraday’s constantF96485.3365(21) C⋅mol−1
Ideal gas constantR8.3144621(75) J⋅K−1⋅mol−1
Mass of an electronme9.10938291(40)×10−31 kg
0.510998928(11) MeV/c2
Mass of a protonmp1.672621777(74)×10−27 kg
938.272046(21) MeV/c2
Mass of a neutronmn1.674927351(74)×10−27 kg
939.565378(21) MeV/c2
Atomic mass unitu, amu or Da1.660538921(73)×10−27 kg
931.494061(21) MeV/c2
Permittivity of free spaceε08.854187817×10−12
Coulomb’s constant1/4πε08.9875517973681764×109 N⋅m2⋅C-2
Permeability of free spaceμ04π×10−7 N⋅A-2
Rydberg constantR1.0973731568539(55)×10−7 m-1
Bohr radiusa05.2917721092(17)×10−11 m

List of Electronegativity Values of the Elements

Electronegativity is a chemical property which describes how well an atom can attract an electron to itself. Values for electronegativity run from 0 to 4. Electronegativity is used to predict whether a bond between atoms will be ionic or covalent. It can also be used to predict if the resulting molecule will be polar or nonpolar. This table is a list of electronegativity values of the elements.

Periodic Table ElectronegativityClick the periodic table to view this list in periodic table form.

 NUMBER SYMBOLELEMENT ELECTRONEGATIVITY
1HHydrogen2.20
2HeHeliumno data
3LiLithium0.98
4BeBeryllium1.57
5BBoron2.04
6CCarbon2.55
7NNitrogen3.04
8OOxygen3.44
9FFluorine3.98
10NeNeonno data
11NaSodium0.93
12MgMagnesium1.31
13AlAluminum1.61
14SiSilicon1.90
15PPhosphorus2.19
16SSulfur2.58
17ClChlorine3.16
18ArArgonno data
19KPotassium0.82
20CaCalcium1.00
21ScScandium1.36
22TiTitanium1.54
23VVanadium1.63
24CrChromium1.66
25MnManganese1.55
26FeIron1.83
27CoCobalt1.88
28NiNickel1.91
29CuCopper1.90
30ZnZinc1.65
31GaGallium1.81
32GeGermanium2.01
33AsArsenic2.18
34SeSelenium2.55
35BrBromine2.96
36KrKrypton3.00
37RbRubidium0.82
38SrStrontium0.95
39YYttrium1.22
40ZrZirconium1.33
41NbNiobium1.6
42MoMolybdenum2.16
43TcTechnetium1.9
44RuRuthenium2.2
45RhRhodium2.28
46PdPalladium2.20
47AgSilver1.93
48CdCadmium1.69
49InIndium1.78
50SnTin1.96
51SbAntimony2.05
52TeTellurium2.1
53IIodine2.66
54XeXenon2.6
55CsCesium0.79
56BaBarium0.89
57LaLanthanum1.10
58CeCerium1.12
59PrPraseodymium1.13
60NdNeodymium1.14
61PmPromethium1.13
62SmSamarium1.17
63EuEuropium1.2
64GdGadolinium1.2
65TbTerbium1.22
66DyDysprosium1.23
67HoHolmium1.24
68ErErbium1.24
69TmThulium1.25
70YbYtterbium1.1
71LuLutetium1.27
72HfHafnium1.3
73TaTantalum1.5
74WTungsten2.36
75ReRhenium1.9
76OsOsmium2.2
77IrIridium2.2
78PtPlatinum2.28
79AuGold2.54
80HgMercury2.00
81TlThallium1.62
82PbLead2.33
83BiBismuth2.02
84PoPolonium2.0
85AtAstatine2.2
86RnRadonno data
87FrFrancium0.7
88RaRadium0.89
89AcActinium1.1
90ThThorium1.3
91PaProtactinium1.5
92UUranium1.38
93NpNeptunium1.36
94PuPlutonium1.28
95AmAmericium1.3
96CmCurium1.3
97BkBerkelium1.3
98CfCalifornium1.3
99EsEinsteinium1.3
100FmFermium1.3
101MdMendelevium1.3
102NoNobelium1.3
103LrLawrenciumno data
104RfRutherfordiumno data
105DbDubniumno data
106SgSeaborgiumno data
107BhBohriumno data
108HsHassiumno data
109MtMeitneriumno data
110DsDarmstadtiumno data
111RgRoentgeniumno data
112CnCoperniciumno data
113UutUnuntriumno data
114FlFleroviumno data
115UupUnunpentiumno data
116LvLivermoriumno data
117UusUnunseptiumno data
118UuoUnunoctiumno data

 

Trig Identities Study Sheet

This study sheet has ten groups of trig identities for the basic trigonometry functions. These identities include the reciprocal and co-function relationships between trig functions. There are also half-angle and double angle identities, along with sum and product relationships. This table is an extremely useful thing to keep on hand when working with trig functions. Print a copy and keep it with your textbook today.

Trig IdentitiesThis cheat sheet is optimized to fit on a single sheet of paper. Download the PDF version to print your own.

Downloadable Trig Table PDF

This table contains values for sine, cosine and tangent for angles between 0 and 90º. All values are rounded to four decimal places.

Trig TableClick the image for the full-sized image or download the PDF version.

The downloadable trig table PDF is optimized to fit on a single 8½ x 11″ sheet of paper.

Element List in Spanish

Tabla Periodica ElementosHave you ever wondered if the names of elements are the same in other languages? Different languages have different words for the same thing, why should the elements be any different?

This table is a list of the elements in English and Spanish arranged by atomic number.

If you’d like to see a periodic table in Spanish, check out this Periodic Table, or Tabla Periódica de los Elementos in Spanish.

 NUMBER SYMBOLENGLISHSPANISH
1HHydrogenHidrógeno
2HeHeliumHelio
3LiLithiumLitio
4BeBerylliumBerilio
5BBoronBoro
6CCarbonCarbono
7NNitrogenNitrógeno
8OOxygenOxígeno
9FFluorineFlúor
10NeNeonNeón
11NaSodiumSodio
12MgMagnesiumMagnesio
13AlAluminumAluminio
14SiSiliconSilicio
15PPhosphorusFósforo
16SSulfurAzufre
17ClChlorineCloro
18ArArgonArgón
19KPotassiumPotasio
20CaCalciumCalcio
21ScScandiumEscandio
22TiTitaniumTitanio
23VVanadiumVanadio
24CrChromiumCromo
25MnManganeseManganeso
26FeIronHierro
27CoCobaltCobalto
28NiNickelNíquel
29CuCopperCobre
30ZnZincZinc
31GaGalliumGalio
32GeGermaniumGermanio
33AsArsenicArsénico
34SeSeleniumSelenio
35BrBromineBromo
36KrKryptonKriptón
37RbRubidiumRubidio
38SrStrontiumEstroncio
39YYttriumItrio
40ZrZirconiumZirconio
41NbNiobiumNiobio
42MoMolybdenumMolibdeno
43TcTechnetiumTecnecio
44RuRutheniumRutenio
45RhRhodiumRodio
46PdPalladiumPaladio
47AgSilverPlata
48CdCadmiumCadmio
49InIndiumIndio
50SnTinEstaño
51SbAntimonyAntimonio
52TeTelluriumTelurio
53IIodineYodo
54XeXenonXenón
55CsCesiumCesio
56BaBariumBario
57LaLanthanumLantano
58CeCerCerio
59PrPraseodymiumPraseodimio
60NdNeodymiumNeodimio
61PmPromethiumPrometio
62SmSamariumSamario
63EuEuropiumEuropio
64GdGadoliniumGadolinio
65TbTerbiumTerbio
66DyDysprosiumDisprosio
67HoHolmiumHolmio
68ErErbiumErbio
69TmThuliumTulio
70YbYtterbiumIterbio
71LuLutetiumLutecio
72HfHafniumHafnio
73TaTantalumTantalio
74WTungstenWolframio
75ReRheniumRenio
76OsOsmiumOsmio
77IrIridiumIridio
78PtPlatinumPlatino
79AuGoldOro
80HgMercuryMercurio
81TlThalliumTalio
82PbLeadPlomo
83BiBismuthBismuto
84PoPoloniumPolonio
85AtAstatineAstato
86RnRadonRadón
87FrFranciumFrancio
88RaRadiumRadio
89AcActiniumActinio
90ThThoriumTorio
91PaProtactiniumProtactinio
92UUraniumUranio
93NpNeptuniumNeptunio
94PuPlutoniumPlutonio
95AmAmericiumAmericio
96CmCuriumCurio
97BkBerkeliumBerkelio
98CfCaliforniumCalifornio
99EsEinsteiniumEinstenio
100FmFermiumFermio
101MdMendeleviumMendelevio
102NoNobeliumNobelio
103LrLawrenciumLaurencio
104RfRutherfordiumRutherfordio
105DbDubniumDubnio
106SgSeaborgiumSeaborgio
107BhBohriumBohrio
108HsHassiumHassio
109MtMeitneriumMeitnerio
110DsDarmstadtiumDarmstadtio
111RgRoentgeniumRoentgenio
112CnCoperniciumCopernicio
113UutUnuntriumUnuntrio
114FlFleroviumFlerovio
115UupUnunpentiumUnunpentio
116LvLivermoriumLivermorio
117UusUnunseptiumUnunseptio
118UuoUnunoctiumUnunoctio

Element List in German

Farbperiodensystemsder ElementeHave you ever wondered if the names of elements are the same in other languages? Different languages have different words for the same thing, why should the elements be any different?

This table is a list of the elements in English and German arranged by atomic number.

If you’d like to see a periodic table in German, check out this Periodic Table, or Periodensystems der Elemente in German.

 NUMBER SYMBOLENGLISHGERMAN
1HHydrogenWasserstoff
2HeHeliumHelium
3LiLithiumLithium
4BeBerylliumBeryllium
5BBoronBor
6CCarbonKohlenstoff
7NNitrogenStickstoff
8OOxygenSauerstoff
9FFluorineFluor
10NeNeonNeon
11NaSodiumNatrium
12MgMagnesiumMagnesium
13AlAluminumAluminium
14SiSiliconSilicium
15PPhosphorusPhosphor
16SSulfurSchwefel
17ClChlorineChlor
18ArArgonArgon
19KPotassiumKalium
20CaCalciumCalcium
21ScScandiumScandium
22TiTitaniumTitan
23VVanadiumVanadium
24CrChromiumChrom
25MnManganeseMangan
26FeIronEisen
27CoCobaltCobalt
28NiNickelNickel
29CuCopperKupfer
30ZnZincZink
31GaGalliumGallium
32GeGermaniumGermanium
33AsArsenicArsen
34SeSeleniumSelen
35BrBromineBrom
36KrKryptonKrypton
37RbRubidiumRubidium
38SrStrontiumStrontium
39YYttriumYttrium
40ZrZirconiumZirconium
41NbNiobiumNiob
42MoMolybdenumMolibdän
43TcTechnetiumTechnetium
44RuRutheniumRuthenium
45RhRhodiumRhodium
46PdPalladiumPalladium
47AgSilverSilber
48CdCadmiumCadmium
49InIndiumIndium
50SnTinZinn
51SbAntimonyAntimon
52TeTelluriumTellur
53IIodineIod
54XeXenonXenon
55CsCesiumCäsium
56BaBariumBarium
57LaLanthanumLanthan
58CeCerCerium
59PrPraseodymiumPraseodym
60NdNeodymiumNeodym
61PmPromethiumPromethium
62SmSamariumSamarium
63EuEuropiumEuropium
64GdGadoliniumGadolinium
65TbTerbiumTerbium
66DyDysprosiumDysprosium
67HoHolmiumHolmium
68ErErbiumErbium
69TmThuliumThulium
70YbYtterbiumYtterbium
71LuLutetiumLutetium
72HfHafniumHafnium
73TaTantalumTantal
74WTungstenWolfram
75ReRheniumRhenium
76OsOsmiumOsmium
77IrIridiumIridium
78PtPlatinumPlatin
79AuGoldOro
80HgMercuryQuecksilber
81TlThalliumThallium
82PbLeadBlei
83BiBismuthBismut
84PoPoloniumPolonium
85AtAstatineAstat
86RnRadonRadon
87FrFranciumFrancium
88RaRadiumRadium
89AcActiniumActinium
90ThThoriumThorium
91PaProtactiniumProtactinium
92UUraniumUran
93NpNeptuniumNeptunium
94PuPlutoniumPlutonium
95AmAmericiumAmericium
96CmCuriumCurium
97BkBerkeliumBerkelium
98CfCaliforniumCalifornium
99EsEinsteiniumEinsteinium
100FmFermiumFermium
101MdMendeleviumMendelevium
102NoNobeliumNobelium
103LrLawrenciumLawrencium
104RfRutherfordiumRutherfordium
105DbDubniumDubnium
106SgSeaborgiumSeaborgium
107BhBohriumBohrium
108HsHassiumHassium
109MtMeitneriumMeitnerium
110DsDarmstadtiumDarmstadtium
111RgRoentgeniumRoentgenium
112CnCoperniciumCopernicium
113UutUnuntriumUnuntrium
114FlFleroviumFlerovium
115UupUnunpentiumUnunpentium
116LvLivermoriumLivermorium
117UusUnunseptiumUnunseptium
118UuoUnunoctiumUnunoctium

20 Amino Acids

Amino acids are organic compounds containing an amino group (-NH2) and a carboxyl group (-COOH). This is the general structure of an amino acid:

General Amino Acid Structurewhere R is the side chain functional group that distinguishes one amino acid from another.

This is a table of the 20 amino acids derived from proteins. The table contains the amino acid’s name, common abbreviation and symbol, linear structure and skeletal structure.

 Name Symbol Linear StructureSkeletal Structure
Alanineala ACH3-CH(NH2)-COOHAlanine Structure
Argininearg RHN=C(NH2)-NH-(CH2)3-CH(NH2)-COOHArginine Structure
Asparagineasn NH2N-CO-CH2-CH(NH2)-COOHAsparagine Structure
Aspartic Acidasp DHOOC-CH2-CH(NH2)-COOHAspartic Acid Structure
Cysteinecys CHS-CH2-CH(NH2)-COOHCysteine Structure
Glutamic Acidglu EHOOC-(CH2)2-CH(NH2)-COOHGlutamic Acid Structure
Glutaminegln QH2N-CO-(CH2)2-CH(NH2)-COOHGlutamine Structure
Glycinegly GNH2-CH2-COOHGlycine Structure
Histidinehis HNH-CH=N-CH=C-CH2-CH(NH2)-COOHHistidine Structure
Isoleucineile ICH3-CH2-CH(CH3)-CH(NH2)-COOHIsoleucine Structure
Leucineleu L(CH3)2-CH-CH2-CH(NH2)-COOHLeucine Structure
Lysinelys KH2N-(CH2)4-CH(NH2)-COOHLysine Structure
Methioninemet MCH3-S-(CH2)2-CH(NH2)-COOHMethionine Structure
Phenylalaninephe FPh-CH2-CH(NH2)-COOHPhenylanaline Structure
Prolinepro PNH-(CH2)3-CH-COOHProline Structure
Serineser SHO-CH2-CH(NH2)-COOHSerine Structure
Threoninethr TCH3-CH(OH)-CH(NH2)-COOHTyrosine Structure
Tryptophantrp WPh-NH-CH=C-CH2-CH(NH2)-COOHTryptophan Structure
Tyrosinetyr YHO-Ph-CH2-CH(NH2)-COOHTyrosine Structure
Valineval V(CH3)2-CH-CH(NH2)-COOHValine Structure

Amino acids are often grouped by the chemistry of the side chain. These groups are polar-uncharged, polar-charged and non-polar.

Eight of the 20 amino acids are polar-uncharged: Asparagine, cysteine, glutamine, histidine, serine, threonine, tryptophan and tyrosine.

Eight of the 20 amino acids are non-polar: alanine, glycine, isoleucine, leucine, methionine, phenylalanine, proline, and valine.

The final four are polar-charged: arginine, aspartic acid, glutamic acid, and lysine.

A downloadable study sheet of this information is available here.