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Based on thecharacteristicsdescribed, thesymbolswill be:Francium - Fr.Sodium - Na.Argon - Ar.Carbon - C.Thallium - TI.What are the characteristics of some elements?Franciumis an element in Period 5 and it is known to have the largest atomic radius on account of it having 87 electrons.Sodium(Na) is known to be the smallest metal in Period 3 with only 11 electrons.ArgonandCarbonhave the highest Ionization energies in their period and group respectively.AndThalliumforms the most basic oxide because it has the highest metallic character.Find out more onIonization energyatbrainly.com/question/1445179....