[Ar] 4s2 3d5
The noble gas configuration for manganese (Mn) is [Ar] 3d5 4s2. This means that it has the same electron configuration as argon (Ar) with 18 electrons, followed by 3d5 and 4s2 orbitals filled with electrons.
[Ar]3d54s2
[Ar]3d54s2
The long hand electron configuration of manganese is: 1s22s22p63s23p64s23d5.
The element mercury (Hg, atomic number 80) has the electron configuration [Xe] 4f14 5d10 6s2
The atomic no of Cobalt is 27 which is intermediate of 18 for noble gas Argon and 36 for noble gas Krypton, practically Cobalt can't accept 9 electrons similarly can not donate nine electrons so it tends to reach the electronic configuration of Krypton by forming extra coordinate covalent bond.
Electron Configuration for Mg: 1s2 2s2 2p6 3s2 Noble Gas Notation for Mg: [Mg] 3s2
The ground-state electron configuration for a neutral atom of manganese is: 1s22s22p63s23p63d54s2 or [Ar]3d54s2
The element with Z = 25 is manganese. The electron configuration of manganese is 1s2 2s2 2p6 3s2 3p6 4s2 3d5.
The element with this electron configuration is manganese (Mn), which has 25 electrons.
[Ar] 4s2 3d5
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