Question

Define IE1 and IE2???

Answer 1

HEYA MATE HERE U GO.

❤. IE1 ❤

⭐. The minimum energy required to remove an electron from most loosely bound electron from isolated gaseous atom to convert it into a gaseous uni positive ion called IE1.

❤. IE2 ❤

⭐. The energy required to remove an electron from unipositive gaseous ion is called IE2.

Answer 2

We have to define first ionisation enthalpy (IE₁) and 2nd ionisation enthalpy (IE₂).

First ionisation enthalpy :

• It is the amount of energy required to remove an electron from an isolated gaseous atom.
• For example, Na(g) + Q ⇔ Na⁺(aq) + e⁻ , Here Q is the amount of energy needed to remove an electron from Na atom from its ground state. so, Q is nothing but the first ionisation enthalpy of sodium.

2nd Ionisation enthalpy :

• It is the amount of energy required to remove an electron from +1 ion of the element.
• for example, Na⁺ (aq) + Q ⇔ Na⁺⁺ (aq)  + e⁻ , Here, Q is nothing but 2nd ionisation enthalpy of sodium.
• It is to be noticed that the 2nd ionisation enthalpy is always higher than the first ionisation enthalpy. i.e., IE₂ > IE₁

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