Thomsons main contribution to atomic theory

Feffer, Stuart M. Thomson, and the Discovery of the Electron. Kragh, Helge. Thomson, the Electron, and Atomic Architecture. Cite this article Pick a style below, and copy the text for your bibliography. January 8, Retrieved January 08, from Encyclopedia. Then, copy and paste the text into your bibliography or works cited list. Because each style has its own formatting nuances that evolve over time and not all information is available for every reference entry or article, Encyclopedia.

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Chemistry Structure of Atom Thomsons Model. What is the important feature of Thomson atomic model? His model lacked a nucleus, protons, and neutrons. Start Quiz. Your result is as below. Login To View Results. Did not receive OTP? View Result. Download Now. Watch Now. Francium Fr is thought to be a gray colored metal that has the atomic number 87 in the periodic table.

It is an Alkali Metal with the symbol Fr and is located in Group 1 of the periodic table. Radon Rn is a colourless, odourless, radioactive gas non-metal that has the atomic number 86 in the periodic table in Group It has the symbol Rn. Astatine At is a radioactive non-metal that has the atomic number 85 in the periodic table in Group It has the symbol At.

Polonium Po is a silvery-gray metal that has the atomic number 84 in the periodic table in Group It has the symbol Po. Bismuth Bi is a hard steel-gray metal that has the atomic number 83 in the periodic table in Group It has the symbol Bi. Lead Pb is a soft gray metal that has the atomic number 82 in the periodic table in Group It has the symbol Pb.

Thallium Tl is a soft gray metal that has the atomic number 81 in the periodic table in Group It has the symbol Tl. Mercury Hg is a liquid silver coloured metal that has the atomic number 80 in the periodic table. It has the symbol Hg. Gold Au is a soft gold coloured metal that has the atomic number 79 in the periodic table. It has the symbol Au.

Platinum Pt is a heavy white metal that has the atomic number 78 in the periodic table. It has the symbol Pt. Iridium Ir is a heavy white metal that has the atomic number 77 in the periodic table. It has the symbol Ir. Osmium Os is a hard fine black powder or blue-white metal that has the atomic number 76 in the periodic table. It has the symbol Os.

Rhenium Re is a silvery-white coloured metal that has the atomic number 75 in the periodic table. It has the symbol Re. Tungsten W is a steel-gray coloured metal that has the atomic number 74 in the periodic table. It has the symbol W. Tantalum Ta is a gray coloured metal that has the atomic number 73 in the periodic table. It has the symbol Ta.

Hafnium Hf is a silvery coloured metal that has the atomic number 72 in the periodic table.

Thomsons main contribution to atomic theory

It has the symbol Hf. Lutetium Lu is a silvery-white coloured metal that has the atomic number 71 in the periodic table. It is a Lanthanide metal. It has the symbol Lu. Ytterbium Yb is a silvery coloured metal that has the atomic number 70 in the periodic table. It has the symbol Yb. Thulium Tm is a silvery coloured metal that has the atomic number 69 in the periodic table.

It has the symbol Tm. Erbium Er is a silvery coloured metal that has the atomic number 68 in the periodic table. It has the symbol Er. Holmium Ho is a silvery coloured metal that has the atomic number 67 in the periodic table. It has the symbol Ho. Dysprosium Dy is a silvery coloured metal that has the atomic number 66 in the periodic table.

It has the symbol Dy. Terbium Tb is a silvery-gray coloured metal that has the atomic number 65 in the periodic table. It has the symbol Tb. Gadolinium Gd is a silvery-white coloured metal that has the atomic number 64 in the periodic table. It has the symbol Gd. Europium Eu is a silvery-white coloured metal that has the atomic number 63 in the periodic table.

It has the symbol Eu. Samarium Sm is a silvery coloured metal that has the atomic number 62 in the periodic table. It has the symbol Sm. Promethium Pm is a rare metal that has the atomic number 61 in the periodic table. It has the symbol Pm. Neodymium Nd is a silvery white coloured metal that has the atomic number 60 in the periodic table.

It has the symbol Nd. Praseodymium Pr is a silvery white coloured metal that has the atomic number 59 in the periodic table. It has the symbol Pr. Cerium Ce is a iron-gray coloured metal that has the atomic number 58 in the periodic table. It has the symbol Ce. Lanthanum La is a soft silvery white coloured metal that has the atomic number 57 in the periodic table.

It has the symbol La. Barium Ba is a soft silvery white coloured metal that has the atomic number 56 in the periodic table. It is an Alkaline earth metal and is located in Group 2 of the periodic table. Caesium Cs is a soft gray coloured metal that has the atomic number 55 in the periodic table. It is an Alkali Metal and is located in Group 1 of the periodic table.

Xenon Xe exists as a colourless, odourless gas and is chemically inert. It has the atomic number 54 in the periodic table and belongs in Group 18, the Noble Gases. It is a non metal with the symbol Xe. Iodine I is a purple grey solid non metal. It has the atomic number 53 in the periodic table. It is located in Group 17, the Halogens. It has the symbol I.

Tellurium Te is a silver-white semi metal that has the atomic number 52 in the periodic table. It is located in Group 16 of the periodic table. It has the symbol Te. Antimony Sb is a hard brittle silver-white semi metal that has the atomic number 51 in the periodic table. It is located in Group 15 of the periodic table. It has the symbol Sb.

Tin Sn is a silver-white metal that has the atomic number 50 in the periodic table. It is located in Group 14 of the periodic table. It has the symbol Sn. You can opt out at any time. You must be 16 years or older and a resident of the United States. Your Profile. Email Updates. Thomson announces the discovery of electrons. Read more.