\textbf{202-} The number of protons of ion $^{72}\text{M}^{3+}$ is $\circ/8$ times the number of neutrons. Element M is in the same period and same row in the periodic table as which element, and in this ion, how many layers are filled with electrons?
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(1) $3,\ _{46}\text{A}$ \hspace{1cm} (2) $4,\ _{46}\text{A}$ \hspace{1cm} (3) $3,\ _{16}\text{D}$ \hspace{1cm} (4) $4,\ _{16}\text{D}$
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