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JAMB Chemistry 2014 Paper

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Question : 5

Total: 45

An element X has electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵. Which of the following statements is correct about the element?

lt has a completely filled p-orbital
lt has 5 electrons in its outermost shell.
lt belongs to group ll on the periodic table
lt is a halogen

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