Question
Use the periodic table to answer the following questions.
Identify an element with five electrons in the outer subshell.

Answer

The electronic configuration of an element having 5 electrons in its outermost subshell should be $\mathrm{ns}^2$ $n p^5$. This is the electronic configuration of the halogen group.
Thus, the element can be $\mathrm{F}, \mathrm{CL}, \mathrm{Br}, \mathrm{I}$, or At.

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