The element X has 4 shells, and its 3d subshell has 6 electrons. Write the complete electronic configuration of the element.

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Solution

Since the last electron enters the 3d subshell, the electronic configuration will be like, $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6} 4 s^{2} .$

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The element X has 4 shells, and its 3d subshell has 6 electrons. Write the complete electronic configuration of the element.

Since the last electron enters the 3d subshell, the electronic configuration will be like, 1s22s22p63s23p63d64s2.

Since the last electron enters the 3d subshell, the electronic configuration will be like, $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{6} 4 s^{2} .$