Atomic Number 8

Atomic Number of Oxygen. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. The chemical symbol for Oxygen is O. Atomic Mass of Oxygen. Atomic mass of Oxygen is 15.9994 u.

  1. The atomic number of an atom is defined by the number of protons. Thus, if the given atom has an atomic number of 8, it means that it has 8 protons. When the atom is neutrally charged, there is an.
  2. May 02, 2020 Before a name and symbol are approved, an element may be referred to by its atomic number (e.g., element 120) or by its systematic element name. The systematic element name is a temporary name that is based on the atomic number as a root and the -ium ending as a suffix. For example, element 120 has the temporary name unbinilium.
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Crossword clues for 'ELEMENT, ATOMIC NUMBER 8'

ClueAnswer
Element, atomic number 8 (6)OXYGEN
Life-giving gas (6)
Space station supply (6)
Scuba gear element (6)
Vital gas (6)
Colourless gas (6)
Abundant element (6)
Gaseous element (6)
Combustible gas (6)
Most abundant element in the earth's crust (6)
Chemical Element O (6)

Synonyms, crossword answers and other related words for ELEMENT, ATOMIC NUMBER 8 [oxygen]

We hope that the following list of synonyms for the word oxygen will help you to finish your crossword today. We've arranged the synonyms in length order so that they are easier to find.

3 letter words

GAS

4 letter words

NEON

5 letter words

ARGON - ETHER - OZONE - RADON - XENON

6 letter words

BUTANE - ETHANE - HELIUM - OXYGEN - SILVER

7 letter words

AMMONIA - COAL GAS - KRYPTON - METHANE - PROPANE

8 letter words

CHLORINE - ETHYLENE - FLUORINE - HYDROGEN - LEWISITE - MARSH GAS - NITROGEN - SEWER GAS

9 letter words

ACETYLENE - POISON GAS - RHIZOBIUM

10 letter words

MUSTARD GAS - NATURAL GAS

12 letter words

FORMALDEHYDE

13 letter words

CARBON DIOXIDE - CARBON-DIOXIDE

14 letter words

ATMOSPHERIC GAS - CARBON MONOXIDE

15 letter words

ASPHYXIATING GAS - CHEMICAL ELEMENT - ILLUMINATING GAS

18 letter words

PERIODIC TABLE GROUP

Definition of oxygen

  • a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust


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No.
Atomic
weight
NameSym.M.P.
(°C)
B.P.
(°C)
Density*
(g/cm3)
Earth
crust (%)*
Discovery
(Year)
Group*Electron configurationIonization
energy (eV)
11.008HydrogenH-259-2530.090.14177611s113.60
24.003HeliumHe-272-2690.181895181s224.59
36.941LithiumLi1801,3470.5318171[He] 2s15.39
49.012BerylliumBe1,2782,9701.8517972[He] 2s29.32
510.811BoronB2,3002,5502.34180813[He] 2s2 2p18.30
612.011CarbonC3,5004,8272.260.09ancient14[He] 2s2 2p211.26
714.007NitrogenN-210-1961.25177215[He] 2s2 2p314.53
815.999OxygenO-218-1831.4346.71177416[He] 2s2 2p413.62
918.998FluorineF-220-1881.700.03188617[He] 2s2 2p517.42
1020.180NeonNe-249-2460.90189818[He] 2s2 2p621.56
1122.990SodiumNa988830.972.7518071[Ne] 3s15.14
1224.305MagnesiumMg6391,0901.742.0817552[Ne] 3s27.65
1326.982AluminumAl6602,4672.708.07182513[Ne] 3s2 3p15.99
1428.086SiliconSi1,4102,3552.3327.69182414[Ne] 3s2 3p28.15
1530.974PhosphorusP442801.820.13166915[Ne] 3s2 3p310.49
1632.065SulfurS1134452.070.05ancient16[Ne] 3s2 3p410.36
1735.453ChlorineCl-101-353.210.05177417[Ne] 3s2 3p512.97
1839.948ArgonAr-189-1861.78189418[Ne] 3s2 3p615.76
1939.098PotassiumK647740.862.5818071[Ar] 4s14.34
2040.078CalciumCa8391,4841.553.6518082[Ar] 4s26.11
2144.956ScandiumSc1,5392,8322.9918793[Ar] 3d1 4s26.56
2247.867TitaniumTi1,6603,2874.540.6217914[Ar] 3d2 4s26.83
2350.942VanadiumV1,8903,3806.1118305[Ar] 3d3 4s26.75
2451.996ChromiumCr1,8572,6727.190.0417976[Ar] 3d5 4s16.77
2554.938ManganeseMn1,2451,9627.430.0917747[Ar] 3d5 4s27.43
2655.845IronFe1,5352,7507.875.05ancient8[Ar] 3d6 4s27.90
2758.933CobaltCo1,4952,8708.9017359[Ar] 3d7 4s27.88
2858.693NickelNi1,4532,7328.900.02175110[Ar] 3d8 4s27.64
2963.546CopperCu1,0832,5678.96ancient11[Ar] 3d10 4s17.73
3065.390ZincZn4209077.13ancient12[Ar] 3d10 4s29.39
3169.723GalliumGa302,4035.91187513[Ar] 3d10 4s2 4p16.00
3272.640GermaniumGe9372,8305.32188614[Ar] 3d10 4s2 4p27.90
3374.922ArsenicAs816135.72ancient15[Ar] 3d10 4s2 4p39.79
3478.960SeleniumSe2176854.79181716[Ar] 3d10 4s2 4p49.75
3579.904BromineBr-7593.12182617[Ar] 3d10 4s2 4p511.81
3683.800KryptonKr-157-1533.75189818[Ar] 3d10 4s2 4p614.00
3785.468RubidiumRb396881.6318611[Kr] 5s14.18
3887.620StrontiumSr7691,3842.5417902[Kr] 5s25.69
3988.906YttriumY1,5233,3374.4717943[Kr] 4d1 5s26.22
4091.224ZirconiumZr1,8524,3776.510.0317894[Kr] 4d2 5s26.63
4192.906NiobiumNb2,4684,9278.5718015[Kr] 4d4 5s16.76
4295.940MolybdenumMo2,6174,61210.2217816[Kr] 4d5 5s17.09
43*98.000TechnetiumTc2,2004,87711.5019377[Kr] 4d5 5s27.28
44101.070RutheniumRu2,2503,90012.3718448[Kr] 4d7 5s17.36
45102.906RhodiumRh1,9663,72712.4118039[Kr] 4d8 5s17.46
46106.420PalladiumPd1,5522,92712.02180310[Kr] 4d108.34
47107.868SilverAg9622,21210.50ancient11[Kr] 4d10 5s17.58
48112.411CadmiumCd3217658.65181712[Kr] 4d10 5s28.99
49114.818IndiumIn1572,0007.31186313[Kr] 4d10 5s2 5p15.79
50118.710TinSn2322,2707.31ancient14[Kr] 4d10 5s2 5p27.34
51121.760AntimonySb6301,7506.68ancient15[Kr] 4d10 5s2 5p38.61
52127.600TelluriumTe4499906.24178316[Kr] 4d10 5s2 5p49.01
53126.905IodineI1141844.93181117[Kr] 4d10 5s2 5p510.45
54131.293XenonXe-112-1085.90189818[Kr] 4d10 5s2 5p612.13
55132.906CesiumCs296781.8718601[Xe] 6s13.89
56137.327BariumBa7251,1403.590.0518082[Xe] 6s25.21
57138.906LanthanumLa9203,4696.1518393[Xe] 5d1 6s25.58
58140.116CeriumCe7953,2576.771803101[Xe] 4f1 5d1 6s25.54
59140.908PraseodymiumPr9353,1276.771885101[Xe] 4f3 6s25.47
60144.240NeodymiumNd1,0103,1277.011885101[Xe] 4f4 6s25.53
61*145.000PromethiumPm1,1003,0007.301945101[Xe] 4f5 6s25.58
62150.360SamariumSm1,0721,9007.521879101[Xe] 4f6 6s25.64
63151.964EuropiumEu8221,5975.241901101[Xe] 4f7 6s25.67
64157.250GadoliniumGd1,3113,2337.901880101[Xe] 4f7 5d1 6s26.15
65158.925TerbiumTb1,3603,0418.231843101[Xe] 4f9 6s25.86
66162.500DysprosiumDy1,4122,5628.551886101[Xe] 4f10 6s25.94
67164.930HolmiumHo1,4702,7208.801867101[Xe] 4f11 6s26.02
68167.259ErbiumEr1,5222,5109.071842101[Xe] 4f12 6s26.11
69168.934ThuliumTm1,5451,7279.321879101[Xe] 4f13 6s26.18
70173.040YtterbiumYb8241,4666.901878101[Xe] 4f14 6s26.25
71174.967LutetiumLu1,6563,3159.841907101[Xe] 4f14 5d1 6s25.43
72178.490HafniumHf2,1505,40013.3119234[Xe] 4f14 5d2 6s26.83
73180.948TantalumTa2,9965,42516.6518025[Xe] 4f14 5d3 6s27.55
74183.840TungstenW3,4105,66019.3517836[Xe] 4f14 5d4 6s27.86
75186.207RheniumRe3,1805,62721.0419257[Xe] 4f14 5d5 6s27.83
76190.230OsmiumOs3,0455,02722.6018038[Xe] 4f14 5d6 6s28.44
77192.217IridiumIr2,4104,52722.4018039[Xe] 4f14 5d7 6s28.97
78195.078PlatinumPt1,7723,82721.45173510[Xe] 4f14 5d9 6s18.96
79196.967GoldAu1,0642,80719.32ancient11[Xe] 4f14 5d10 6s19.23
80200.590MercuryHg-3935713.55ancient12[Xe] 4f14 5d10 6s210.44
81204.383ThalliumTl3031,45711.85186113[Xe] 4f14 5d10 6s2 6p16.11
82207.200LeadPb3271,74011.35ancient14[Xe] 4f14 5d10 6s2 6p27.42
83208.980BismuthBi2711,5609.75ancient15[Xe] 4f14 5d10 6s2 6p37.29
84*209.000PoloniumPo2549629.30189816[Xe] 4f14 5d10 6s2 6p48.42
85*210.000AstatineAt3023370.00194017[Xe] 4f14 5d10 6s2 6p59.30
86*222.000RadonRn-71-629.73190018[Xe] 4f14 5d10 6s2 6p610.75
87*223.000FranciumFr276770.0019391[Rn] 7s14.07
88*226.000RadiumRa7001,7375.5018982[Rn] 7s25.28
89*227.000ActiniumAc1,0503,20010.0718993[Rn] 6d1 7s25.17
90232.038ThoriumTh1,7504,79011.721829102[Rn] 6d2 7s26.31
91231.036ProtactiniumPa1,568015.401913102[Rn] 5f2 6d1 7s25.89
92238.029UraniumU1,1323,81818.951789102[Rn] 5f3 6d1 7s26.19
93*237.000NeptuniumNp6403,90220.201940102[Rn] 5f4 6d1 7s26.27
94*244.000PlutoniumPu6403,23519.841940102[Rn] 5f6 7s26.03
95*243.000AmericiumAm9942,60713.671944102[Rn] 5f7 7s25.97
96*247.000CuriumCm1,340013.5019441025.99
97*247.000BerkeliumBk986014.7819491026.20
98*251.000CaliforniumCf900015.1019501026.28
99*252.000EinsteiniumEs86000.0019521026.42
100*257.000FermiumFm1,52700.0019521026.50
101*258.000MendeleviumMd000.0019551026.58
102*259.000NobeliumNo82700.0019581026.65
103*262.000LawrenciumLr1,62700.0019611024.90
104*261.000RutherfordiumRf000.00196440.00
105*262.000DubniumDb000.00196750.00
106*266.000SeaborgiumSg000.00197460.00
107*264.000BohriumBh000.00198170.00
108*277.000HassiumHs000.00198480.00
109*268.000MeitneriumMt000.00198290.00
No.
Atomic
weight
NameSym.M.P.
(°C)
B.P.
(°C)
Density*
(g/cm3)
Earth crust
(%)*
Discovery
(Year)
Group*Electron configurationIonization
energy (eV)
Lithium 8 atomic number

Notes:
• Density of elements with boiling points below 0°C is given in g/l. In a sorted list, these elements are shown before other elements that have boiling points >0°C.
• Earth crust composition average values are from a report by F. W. Clarke and H. S. Washington, 1924. Elemental composition of crustal rocks differ between different localities (see article).
Group: There are only 18 groups in the periodic table that constitute the columns of the table. Lanthanoids and Actinoids are numbered as 101 and 102 to separate them in sorting by group.
• The elements marked with an asterisk (in the 2nd column) have no stable nuclides. For these elements the weight value shown represents the mass number of the longest-lived isotope of the element.

Abbreviations and Definitions:

No. - Atomic Number; M.P. - melting point; B.P. - boiling point

Atomic Number 82

Atomic number: The number of protons in an atom. Each element is uniquely defined by its atomic number.

Atomic mass: The mass of an atom is primarily determined by the number of protons and neutrons in its nucleus. Atomic mass is measured in Atomic Mass Units (amu) which are scaled relative to carbon, 12C, that is taken as a standard element with an atomic mass of 12. This isotope of carbon has 6 protons and 6 neutrons. Thus, each proton and neutron has a mass of about 1 amu.

Isotope: Atoms of the same element with the same atomic number, but different number of neutrons. Isotope of an element is defined by the sum of the number of protons and neutrons in its nucleus. Elements have more than one isotope with varying numbers of neutrons. For example, there are two common isotopes of carbon, 12C and 13C which have 6 and 7 neutrons respectively. The abundances of different isotopes of elements vary in nature depending on the source of materials. For relative abundances of isotopes in nature see reference on Atomic Weights and Isotopic Compositions.

Atomic weight: Atomic weight values represent weighted average of the masses of all naturally occurring isotopes of an element. The values shown here are based on the IUPAC Commission determinations (Pure Appl. Chem. 73:667-683, 2001). The elements marked with an asterisk have no stable nuclides. For these elements the weight value shown represents the mass number of the longest-lived isotope of the element.

Electron configuration: See next page for explanation of electron configuration of atoms.

Ionization energy (IE): The energy required to remove the outermost electron from an atom or a positive ion in its ground level. The table lists only the first IE in eV units. To convert to kJ/mol multiply by 96.4869. Reference: NIST Reference Table on Ground states and ionization energies for the neutral atoms. IE decreases going down a column of the periodic table, and increases from left to right in a row. Thus, alkali metals have the lowest IE in a period and Rare gases have the highest.

Hydrogen

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