Answer:
A) [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 4d^{5}[/tex].
Explanation:
An electronic configuration is an expression/ arrangement of the electrons in an atom or element. The principle of the orbitals are followed to write the electronic configuration of any atom or element.
At the ground state, the electrons in an atom or element are not excited, thus they are in their lowest energy state.
Manganese atom has 25 electrons, so its electronic configuration is [tex]1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2} 4d^{5}[/tex].
