The minimum amount of energy which is required to remove an outermost electron from anyisolated neutral gaseous atom is known as first iosiation energy. These are the following factors which other ionisation energy. (i) Ionisation energy alpha (1)/("principal quantum number") (ii) Ionisation Energy alphaZ_(eff) (iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high (iv) If penultimate electron will effectively shield the mucleus ionisation energy wiill be less and vise versa. 1E_(1) and IE_(2) of Mg are 178 kcal/mol and 348 kcal/mol. The enthalpy required for the reaction MgrarrMg^(2+)+2e is:

The minimum amount of energy which is required to remove an outermost

1.	The minimum amount of energy which is required to remove an outermost electron from anyisolated neutral gaseous atom is known as first iosiation energy. These are the following factors which other ionisation energy. (i) Ionisation energy alpha (1)/("principal quantum number") (ii) Ionisation Energy alphaZ_(eff) (iii) If orbitals are fully filled or half filled so stability will be more and ionisation energy will be high (iv) If penultimate electron will effectively shield the mucleus ionisation energy wiill be less and vise versa. 1E_(1) and IE_(2) of Mg are 178 kcal/mol and 348 kcal/mol. The enthalpy required for the reaction MgrarrMg^(2+)+2e is:
Answer» `+170` kcal/mol `+526 kcal/mol` `-170` kcal/mol `-526` kcal/mol Solution :