![]() The second electron shell, 2n, contains another spherical s s s s orbital plus three dumbbell-shaped p p p p orbitals, each of which can hold two electrons. Hydrogen and helium are the only two elements that have electrons exclusively in the 1 s 1s 1 s 1, s orbital in their neutral, non-charged, state. On the periodic table, hydrogen and helium are the only two elements in the first row, or period, which reflects that they only have electrons in their first shell. This is written out as 1 s 2 1s^ 2 1 s 2 1, s, squared, referring to the two electrons of helium in the 1 s 1s 1 s 1, s orbital. Helium has two electrons, so it can completely fill the 1 s 1s 1 s 1, s orbital with its two electrons. This can be written out in a shorthand form called an electron configuration as 1 s 1 1s^ 1 1 s 1 1, s, start superscript, 1, end superscript, where the superscripted 1 refers to the one electron in the 1 s 1s 1 s 1, s orbital. Hydrogen has just one electron, so it has a single spot in the 1 s 1s 1 s 1, s orbital occupied. The 1 s 1s 1 s 1, s orbital is the closest orbital to the nucleus, and it fills with electrons first, before any other orbital. 1995 - 2023.The first electron shell, 1n, corresponds to a single 1 s 1s 1 s 1, s orbital. Periodic Table of Elements - Sodium - Na. If you need to cite this page, you can copy this text: This database focuses on the most common chemical compounds used in the home and industry. Molar mass calculations are explained and there is a JavaScript calculator to aid calculations. Molar Mass Calculations and Javascript Calculator.Introduces stoichiometry and explains the differences between molarity, molality and normality. Related ResourcesĪnswers many questions regarding the structure of atoms. Common Chemical Compounds of Sodium ReferencesĪ list of reference sources used to compile the data provided on our periodic table of elements can be found on the main periodic table page.in nature sodium is fount in soda niter, cryolite, amphibole and zeolite. Other important forms of sodium are soda ash(Na2CO3), baking soda (NaHCO 3), Chili saltpeter (NaNO 3) which is sodium nitrate. Sodium chloride is common table salt which is important in animal nutrition. It never exists in nature, but is prepared by electrolysis of absolutely dry fused sodium chloride. It is the most abundant of the alkali metals. Sodium is the sixth most abundant element on earth comprising 2.6% of the earth's crust. Additional Notes: Sodium comes from the English word "soda" and from mideval Latin sodanum which means headache remedy.Also used in street lights, batteries, table salt (NaCl), and glass. Liquid sodium is sometimes used to cool nuclear reactors. Uses of Sodium: Used in medicine, agriculture and photography.Primary mining areas are Germany, Poland, Kenya USA. Approximate annual world wide production: sodium metal, 200,000 tons salt, 168,000,000 tons sodium carbonate, 29,000,000 tons. Sources of Sodium: Obtained by electrolysis of melted sodium chloride (salt), borax and cryolite.Name Origin: From soda (Na2CO3) Na from Latin natrium.Note: this data represents naturally occuring levels of elements in the typical human, it DOES NOT represent recommended daily allowances. Vapor Pressure = C Regulatory / Health.Enthalpy of Vaporization: 89.04 kJ/mole.Enthalpy of Atomization: 108.4 kJ/mole 25☌.Description: Soft silvery white alkali metal that reacts violently with water and oxidises rapidly when cut.Conductivity Electrical: 0.21 10 6/cm Ω.Coefficient of lineal thermal expansion/K -1: 70.6E -6.Valence Electron Potential (-eV): 14.1 Physical Properties of Sodium.Electronegativity: 0.93 (Pauling) 1.01 (Allrod Rochow).Electrochemical Equivalent: 0.85775g/amp-hr.Valence Electrons: 3s 1 Electron Dot Model.Number of Neutrons (most common/stable nuclide): 12.Number of Electrons (with no charge): 11.Electrons per Energy Level: 2,8,1 Shell Model. ![]() ![]() Electron Configuration: 1s 2 2s 2p 6 3s 1.Crystal Structure: Cubic body centered.Cross Section (Thermal Neutron Capture) σ a/ barns : 0.53.Swedish: Natrium Atomic Structure of Sodium.Series: Alkali Metals Sodium's Name in Other Languages.Common Chemical Compounds of Sodium Overview of Sodium.In addition technical terms are linked to their definitions and the menu contains links to related articles that are a great aid in one's studies. Common chemical compounds are also provided for many elements. Skip to site menu on this page Periodic Table of Elements Element Sodium - NaĬomprehensive data on the chemical element Sodium is provided on this page including scores of properties, element names in many languages, most known nuclides of Sodium.
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