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Question
Identify the following:
An element in Period 1 which can be placed in both Group 1 and Group 17 of the Periodic Table.
One Word/Term Answer
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Solution
Hydrogen
Explanation:
Hydrogen has an electronic configuration of 1, which allows it to take e− and complete its duplet as halogen (Group 17), as well as donate 1 e− as alkali metals (Group 1).
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