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Summary of chapter 'The Periodic Table' in 200 words... |
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Answer» ong>EXPLANATION: Elements are arranged in periods and groups on the periodic table. The elements are arranged according to increasing ATOMIC number. Group 1 is known as the alkali metals, group 2 is known as the alkali earth metals, group 17 is known as the halogens and the group 18 is known as the noble GASES. ... |
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