what is the order of electron gain enthalpy of scandium,vandium, Chromium and magnese
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The atomic numbers of vanadium, chromium, manganese, and iron are respectively 23, 24, 25, 26. Chromium may be expected to have the highest second ionisation energy.
The electronic configuration of chromium is [Ar]3d54s1
It loses one electron to form [Ar]3d54s0
in which 3d subshell is half-filled and stable. When another electron is removed, it is removed from half-filled 3d subshell and the stability of 3d subshell is lost. This requires higher energy.
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The order of electron gain enthalpy of the given elements are are magnesium, chromium scandium vanadium
Explanation:
- The electron gain enthalpy is the amount of energy that is liberated when a particular atom gains an electron. the electron gain enthalpy decreases with increase in the molecular size.
- As a result of this magnesium has the highest electron gain enthalpy. The Other elements such a scandium vanadium and chromium are bigger in size as compared to magnesium. However chromium is smaller than the other two.
To know more,
Among halogens, the correct order of amount of energy released in .
..https://brainly.in/question/11815236
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