Saved Bookmarks
| 1. |
The atomic numbers of vanasium (V) Chormium (Cr), manganese (Mn) and iron (Fe) respectively `23, 24, 25` and 26.which one of these may be expected to have the higher seconds ionization enthalpy ?A. CrB. MnC. FeD. V |
|
Answer» Correct Answer - A `underset(3d^(3) 4s^(2))(V)" " underset(3d^(5)4s^(1))(Cr)" "underset(3d^(5)4s^(2))(Mn)" " underset(3d^(6)4s^(2))(Fe)` In case of Chrominum, the second electron will be removed from extra stable half filled configuration `Cr^(+) = 3d^(5) 4s^(0)` |
|