Drawing a box diagram of the electron configuration of an atom

Question

Drawing a box diagram of the electron configuration of an atom: Draw the electron configuration for a neutral atom of cobalt.

Answer 1

A neutral atom of cobalt will have 27 electrons, and the configuration will be

1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁷ 4s²

It is difficult to draw box diagrams on this platform, so just put a box around the arrows in the following, being sure to place 2 arrows per box except for the 3 lone electron in the 3d subshell. They each get their own box.

↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ ↑↓

1s 2s 2p 3s 3p 3d 4s