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The maximum oxidation number of an element with electronic configuration 1s2 2s2 2p6 3s2 3p6 3d5 4s2 is

June 1, 2026Chemistry

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The electronic configuration is $1s^2 2s^2 2p^6 3s^2 3p^6 3d^5 4s^2$ .

Determine the total number of electrons.
Total electrons = $2+2+6+2+6+5+2 = 25$ .
This element is Manganese ( $\text{Mn}$ ).
Determine the maximum oxidation number.
Manganese is a transition metal in Group 7. Its maximum oxidation number is typically achieved when all its valence electrons (from the $4s$ and $3d$ orbitals) are involved in bonding.
Number of

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