Answer:
Argon
Explanation:
Manganese is an atom with 25 electrons in its orbitals. The orbital notation is shown below:
1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s²
The closest noble gas to manganese is argon with a configuration of:
1s² 2s² 2p⁶ 3s² 3p⁶
Therefore, based on the noble gase Ar, we can write Mn as:
[Ar]3d⁵ 4s²
