网络斗地主下载

  • <tr id='a80u8'><strong id='a80u8'></strong><small id='a80u8'></small><button id='a80u8'></button><li id='a80u8'><noscript id='a80u8'><big id='a80u8'></big><dt id='a80u8'></dt></noscript></li></tr><ol id='a80u8'><option id='a80u8'><table id='a80u8'><blockquote id='a80u8'><tbody id='a80u8'></tbody></blockquote></table></option></ol><u id='a80u8'></u><kbd id='a80u8'><kbd id='a80u8'></kbd></kbd>

    <code id='a80u8'><strong id='a80u8'></strong></code>

    <fieldset id='a80u8'></fieldset>
          <span id='a80u8'></span>

              <ins id='a80u8'></ins>
              <acronym id='a80u8'><em id='a80u8'></em><td id='a80u8'><div id='a80u8'></div></td></acronym><address id='a80u8'><big id='a80u8'><big id='a80u8'></big><legend id='a80u8'></legend></big></address>

              <i id='a80u8'><div id='a80u8'><ins id='a80u8'></ins></div></i>
              <i id='a80u8'></i>
            1. <dl id='a80u8'></dl>

                      <dfn id='pj9os'><optgroup id='pj9os'></optgroup></dfn><tfoot id='pj9os'><bdo id='pj9os'><div id='pj9os'></div><i id='pj9os'><dt id='pj9os'></dt></i></bdo></tfoot>

                      <ul id='pj9os'></ul>

                        1. <form id='n3980'></form>
                            <bdo id='n3980'><sup id='n3980'><div id='n3980'><bdo id='n3980'></bdo></div></sup></bdo>

                                WebElements Home WebElements

                                The periodic table of the elements

                                The periodic table is an arrangment of the chemical elements ordered by atomic number so that periodic properties of the elements (chemical periodicity) are made clear.

                                Explore the chemical elements through this periodic table

                                Group 1 2   3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
                                Period
                                1
                                1
                                1.008
                                Hydrogen
                                2
                                4.0026
                                Helium
                                2
                                3
                                6.94
                                Lithium
                                4
                                9.0122
                                Beryllium
                                5
                                10.81
                                Boron
                                6
                                12.011
                                Carbon
                                7
                                14.007
                                Nitrogen
                                8
                                15.999
                                Oxygen
                                9
                                18.998
                                Fluorine
                                10
                                20.180
                                Neon
                                3
                                11
                                22.990
                                Sodium
                                12
                                24.305
                                Magnesium
                                13
                                26.982
                                Aluminium
                                14
                                28.085
                                Silicon
                                15
                                30.974
                                Phosphorus
                                16
                                S
                                32.06
                                Sulfur
                                17
                                35.45
                                Chlorine
                                18
                                39.948
                                Argon
                                4
                                19
                                39.098
                                Potassium
                                20
                                40.078
                                Calcium
                                21
                                44.956
                                Scandium
                                22
                                47.867
                                Titanium
                                23
                                50.942
                                Vanadium
                                24
                                51.996
                                Chromium
                                25
                                54.938
                                Manganese
                                26
                                55.845
                                Iron
                                27
                                58.933
                                Cobalt
                                28
                                58.693
                                Nickel
                                29
                                63.546
                                Copper
                                30
                                65.38
                                Zinc
                                31
                                69.723
                                Gallium
                                32
                                72.630
                                Germanium
                                33
                                74.922
                                Arsenic
                                34
                                78.971
                                Selenium
                                35
                                79.904
                                Bromine
                                36
                                83.798
                                Krypton
                                5
                                37
                                85.468
                                Rubidium
                                38
                                87.62
                                Strontium
                                39
                                88.906
                                Yttrium
                                40
                                91.224
                                Zirconium
                                41
                                92.906
                                Niobium
                                42
                                95.95
                                Molybdenum
                                43
                                Tc
                                96.906
                                Technetium
                                44
                                101.07
                                Ruthenium
                                45
                                102.91
                                Rhodium
                                46
                                106.42
                                Palladium
                                47
                                107.87
                                Silver
                                48
                                112.41
                                Cadmium
                                49
                                114.82
                                Indium
                                50
                                118.71
                                Tin
                                51
                                121.76
                                Antimony
                                52
                                127.60
                                Tellurium
                                53
                                126.90
                                Iodine
                                54
                                131.29
                                Xenon
                                6
                                55
                                132.91
                                Caesium
                                56
                                137.33
                                Barium
                                *
                                71
                                174.97
                                Lutetium
                                72
                                178.49
                                Hafnium
                                73
                                180.95
                                Tantalum
                                74
                                183.84
                                Tungsten
                                75
                                186.21
                                Rhenium
                                76
                                190.23
                                Osmium
                                77
                                192.22
                                Iridium
                                78
                                195.08
                                Platinum
                                79
                                196.97
                                Gold
                                80
                                200.59
                                Mercury
                                81
                                204.38
                                Thallium
                                82
                                207.2
                                Lead
                                83
                                208.98
                                Bismuth
                                84
                                Po
                                208.98
                                Polonium
                                85
                                At
                                209.99
                                Astatine
                                86
                                Rn
                                222.02
                                Radon
                                7
                                87
                                Fr
                                223.02
                                Francium
                                88
                                Ra
                                226.03
                                Radium
                                **
                                103
                                Lr
                                262.11
                                Lawrencium
                                104
                                Rf
                                267.12
                                Rutherfordium
                                105
                                Db
                                270.13
                                Dubnium
                                106
                                Sg
                                269.13
                                Seaborgium
                                107
                                Bh
                                270.13
                                Bohrium
                                108
                                Hs
                                269.13
                                Hassium
                                109
                                Mt
                                278.16
                                Meitnerium
                                110
                                Ds
                                281.17
                                Darmstadtium
                                111
                                Rg
                                281.17
                                Roentgenium
                                112
                                Cn
                                285.18
                                Copernicium
                                113
                                Nh
                                286.18
                                Nihonium
                                114
                                Fl
                                289.19
                                Flerovium
                                115
                                Mc
                                289.20
                                Moscovium
                                116
                                Lv
                                293.20
                                Livermorium
                                117
                                Ts
                                293.21
                                Tennessine
                                118
                                Og
                                294.21
                                Oganesson
                                 
                                *Lanthanoids *
                                57
                                138.91
                                Lanthanum
                                58
                                140.12
                                Cerium
                                59
                                140.91
                                Praseodymium
                                60
                                144.24
                                Neodymium
                                61
                                Pm
                                144.91
                                Promethium
                                62
                                150.36
                                Samarium
                                63
                                151.96
                                Europium
                                64
                                157.25
                                Gadolinium
                                65
                                158.93
                                Terbium
                                66
                                162.50
                                Dysprosium
                                67
                                164.93
                                Holmium
                                68
                                167.26
                                Erbium
                                69
                                168.93
                                Thulium
                                70
                                173.05
                                Ytterbium
                                **Actinoids **
                                89
                                Ac
                                227.03
                                Actinium
                                90
                                Th
                                232.04
                                Thorium
                                91
                                Pa
                                231.04
                                Protactinium
                                92
                                U
                                238.03
                                Uranium
                                93
                                Np
                                237.05
                                Neptunium
                                94
                                Pu
                                244.06
                                Plutonium
                                95
                                Am
                                243.06
                                Americium
                                96
                                Cm
                                247.07
                                Curium
                                97
                                Bk
                                247.07
                                Berkelium
                                98
                                Cf
                                251.08
                                Californium
                                99
                                Es
                                252.08
                                Einsteinium
                                100
                                Fm
                                257.10
                                Fermium
                                101
                                Md
                                258.10
                                Mendelevium
                                102
                                No
                                259.10
                                Nobelium

                                The standard form of the periodic table shown here includes periods (shown horizontally) and groups (shown vertically). The properties of elements in groups are similar in some respects to each other.

                                There is no one single or best structure for the periodic table but by whatever consensus there is, the form used here is very useful and the most common. The periodic table is a masterpiece of organised chemical information and the evolution of chemistry's periodic table into the current form is an astonishing achievement.

                                网络斗地主下载The International Union of Pure and Applied Chemistry (IUPAC) confirmed the names of elements 113, 115, 117, and 118 as:

                                网络斗地主下载This followed a 5-month period of public review after which the names earlier proposed by the discoverers were approved by IUPAC.

                                You can buy this periodic table poster and more at the WebElements periodic table shop.
                                Periodic table cartograms poster

                                On 1 May 2014 a paper published in by J. Khuyagbaatar and others states the superheavy element with atomic number Z = 117 (ununseptium) was produced as an evaporation residue in the 48Ca and 249Bk fusion reaction at the gas-filled recoil separator TASCA at GSI Darmstadt, Germany. The radioactive decay of evaporation residues and their α-decay products was studied using a detection setup that allows measurement of decays of single atomic nuclei with very short half-lives. Two decay chains comprising seven α-decays and a spontaneous fission each were identified and assigned to the isotope 294网络斗地主下载Uus (element 117) and its decay products.

                                Images of various periodic tables

                                Click on the images below to see images of the periodic table in a variety of styles.

                                Icon showing a standard periodic table
                                See standard periodic table images.

                                Icon showing a spiral periodic table
                                See image of spiral periodic tables.

                                Icon showing a circular periodic table
                                See images of circular periodic tables.

                                Icon showing extended periodic tables
                                See images of extended periodic table.

                                在线赌博最新 老虎机大全---网络斗地主下载_欢迎您 疯狂牛牛安卓---网络斗地主下载_欢迎您 娱乐正规网址-Welcome 乐酷棋牌---网络斗地主下载_欢迎您