Chemistry, asked by GarimaNewly, 1 year ago

please explain how??????

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Answered by Anvesh06

After removing 2nd electron for 3rd Ionisation enthalpy all elements shell and sub-shells are same. Required amount of energy (enthalpy) is based upon the stability of d-subshell. The 3d5 sub-shell which is in Manganese has highest stability in all because it is half filled sub-shell (while other are incomplete). So Mn shows highest third ionisation potential or enthalpy.

GarimaNewly: but after removing 3 electrons its confrigution will be 3d2 ..

Anvesh06: not 3

Anvesh06: 2 electrons will be removed

Anvesh06: removal of electrons will be from 4s2 first then 3d

Anvesh06: so both electrons are removed from 4s2 and we are left with 3d5

GarimaNewly: ohh now i got it .. thankyou so much

Anvesh06: my pleasure

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