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Unit Post Test

Based on the location of the halogens, how many valence electrons does bromine have?

A. 2
B. 3
C. 6
D. 7
E. 8

Sagot :

GinnyAnsweridn
To determine the number of valence electrons that bromine (Br) has, let's discuss the periodic table and specifically focus on the halogen family.

1. Identify the Group:
- Bromine (Br) is part of the halogen family. Halogens are located in Group 17 of the periodic table.

2. Valence Electrons in Group 17:
- Elements in the same group have the same number of valence electrons. For Group 17, each element in this group has 7 valence electrons.

3. Conclusion:
- Since bromine (Br) is part of Group 17, it has 7 valence electrons.

The correct answer to the question of how many valence electrons bromine has is:
[tex]\[ \boxed{7} \][/tex]

Thus, the correct answer is D. 7.
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