QQuestionChemistry
QuestionChemistry
"How many valence electrons does bromine
([Ar]4s^23d^104p5) have?
A. 5
B. 7
C. 15
D. 17 "
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Answer
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Step 1
To determine the number of valence electrons for bromine, we first need to identify the noble gas configuration and the outermost energy level.
Step 2
The given electron configuration for bromine is [Ar]4s^2 3d^10 4p^5. Here, [Ar] represents the noble gas argon's electron configuration, 18 electrons, which are not involved in chemical bonding.
Final Answer
Bromine has 17 valence electrons (option D).
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