Describe two properties that the elements in the last two columns of the periodic table share with one another.
Noble gases(last coulumn): helium, neon, argon, krypton, xenon, radon, oganesson
Halogens(second last coloumn): fluorine, chlorine, bromine, iodine, astatine, Tennessine
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Explanation:
actually the characteristics are considered in general, so in general they are 1.electronegative in nature, 2. are acidic in nature
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