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Praxis II General Science

Category - Major Ideas

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The element bromine (Br) has a valence shell configuration of 1s² 2s²p⁶ 3s²p⁶d¹⁰ 4s²p⁵, which means that it needs how many electrons to complete its valence shell?

Explanation

Answer: A - The bromine atom needs just 1 electron to complete its valence shell. The 4^th shell has 2 electrons in the S shell and 6 in the P shell for a complete valence layer.

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