Question

energy required to remove the third electron from di positive ion is​

Answer 1

The energy required to remove an electron from a neutral isolated gaseous atom and convert it into a positively charged gaseous ion is called ionisation potential. It is also called ionisation energy.

The electron to be removed is valence electron. It is most loosely bound electron. The ionisation potential corresponds to the process X(g)→X+(g)+e−

Explanation:

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Answer 2

Energy required to remove the third electron from di-positive ion is called 3RD IONISATION ENERGY.

Let's consent an element A :

Now, the element A became a di-positive ion by ejecting 2 electrons.

$A \overset{IE_{1 + 2} }\longrightarrow {A}^{2 + } + 2 {e}^{ - }$

Now, this di-positive ion again releases an electron to form a tri-positive ion, so the equation is:

${A}^{2 + } \overset{IE_{3} }\longrightarrow {A}^{3 + } + {e}^{ - }$

So, the energy required is called 3rd IONISATION ENERGY.