You can effortlessly find every single detail about the elements from this single Interactive Periodic table. Let me tell you how this Interactive Periodic Table will help you in your studies.ġ). Free Gift for you: Interactive Periodic Table (Here you will get the first, second and third Ionization energy of all the elements in a single chart). These are the ionization energies of first 20 Elements of the periodic table.īut if you want to see the ionization energy of all the 118 elements, then visit: Ionization energy chart of all the elements. For elements with no stable isotopes, the mass number of the isotope with the longest half-life is in parentheses. Atomic number Elements First Ionization energy 1 Hydrogen 13.59 eV 2 Helium 24.58 eV 3 Lithium 5.39 eV 4 Beryllium 9.32 eV 5 Boron 8.29 eV 6 Carbon 11.26 eV 7 Nitrogen 14.53 eV 8 Oxygen 13.61 eV 9 Fluorine 17.42 eV 10 Neon 21.56 eV 11 Sodium 5.13 eV 12 Magnesium 7.64 eV 13 Aluminum 5.98 eV 14 Silicon 8.15 eV 15 Phosphorus 10.48 eV 16 Sulfur 10.36 eV 17 Chlorine 12.96 eV 18 Argon 15.75 eV 19 Potassium 4.34 eV 20 Calcium 6.11 eV. You can effortlessly find every single detail about the elements from this single Interactive Periodic table.List of elements with their ionization energies values in eV (electron volt) are given below. In this way, the elements of the same group show similar chemical properties and they also have the same number of valence electrons. They are soft and can be cut easily with a kitchen knife.Īlso all the elements of group 1 have one valence electron.Īll the elements of group 18 are chemically inert (that means they do not easily react with other elements).Īnd all the elements of group 18 have a complete octet (that means they have 8 electrons in their outer shell). The elements lying in the same groups show similar chemical properties and they also have same number of valence electrons.Īll the elements of group 1 are highly reactive to water. There are total 18 vertical columns on periodic table. Groups are the vertical columns on the periodic table. The elements included in Noble gases group are įor detailed information on noble gases, read the main article on Noble gases of periodic table. Noble gases group is the last group (group 18) on the periodic table.
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