![]() ![]() I’ll keep this very short and to the point. I have explained the concept of valence electrons for d block and f block elements in separate articles “d block elements” and “f block elements.” (Because it is little bit different and first you need to know about the concept of orbitals) Trends in periodic table (Periodic trends) Group 18 indicates 8 valence electrons, not 18. Group 17 indicates 7 valence electrons, not 17. Group 16 indicates 6 valence electrons, not 16. Group 15 indicates 5 valence electrons, not 15. Group 14 indicates 4 valence electrons, not 14. Group 13 indicates 3 valence electrons, not 13. Thus, the arrangement of electrons in the orbit of Chlorine atom is as shown above. (In other words, Chlorine has total 17 electrons).Īnd now you know very well that 2nd orbit holds maximum 8 electrons. List of group 18 elements with their symbol are given below: Element name Symbol Neon Ne Argon Ar Krypton Kr Xenon Xe Radon Rn Oganesson OgĪlso read: Why are these elements known as p-block elements?Ītomic number of chlorine is 17. List of group 17 elements with their symbol are given below: Element name Symbol Fluorine F Chlorine Cl Bromine Br Iodine I Astatine At Tennessine Ts List of group 16 elements with their symbol are given below: Element name Symbol Oxygen O Sulphur S Selenium Se Tellurium Te Polonium Po Livermorium Lv ![]() List of group 15 elements with their symbol are given below: Element name Symbol Nitrogen N Phosphorus P Arsenic As Antimony Sb Bismuth Bi Moscovium Mc List of group 14 elements with their symbol are given below: Element name Symbol Carbon C Silicon Si Germanium Ge Tin Sn Led Pb Flerovium Fl List of group 13 elements with their symbol are given below: Element name Symbol Boron B Aluminum Al Gallium Ga Indium In Thallium Tl Nihonium Nh The following groups are included in the p block of periodic table. Now, here is your p block on the Periodic table. Here, you will exactly come to know how Henry Moseley arranged the elements in periodic table on the basis of modern periodic law. How are elements arranged in periodic table?
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