Question
How many electrons are there in $\mathrm{Br}^{-}$ ? What $1+$ cation has the same number of electrons as $\mathrm{Br}^{-}$ ?
Step 1
The atomic number of bromine (Br) is 35, which means a neutral bromine atom has 35 electrons. However, $\mathrm{Br}^{-}$ has gained one extra electron, making a total of 36 electrons. Show more…
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