Question

which of the following shows the electron dot structure for a bromine atom?
○ a. br·
○ b. ·br·
○ c. ::br::
○ d. ::br::

Explanation:

Bromine (Br) is in Group 17 (halogens) with 7 valence electrons. Electron - dot structures show valence electrons. Option C has 7 dots (valence electrons) around Br, matching its valence electron count. A has 1, B has 3, D has an incorrect arrangement.

Answer:

C. $\boldsymbol{:\overset{..}{Br}:}$ (with the correct 7 valence - electron dot arrangement as in option C)