Question

Mg+2 ,Mg+and Mg which have heigher ionisation energy and why???​

Answer 1

Answer:

electronic configuration of Mg= 2.8.2, Mg+= 2.8.1, Mg2+ = 2.8

Mg2+ has higher ionisation energy because it has noble gas electronic configuration 2.8

So it is difficult to remove an electron from Mg2+.

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Answer 2

Answer:

Mg is larger than the first because it always takes more energy to remove an electron from a positively charged ion than from a neutral atom.

Explanation:

The second ionization energy of Mg is larger than the first because it always takes more energy to remove an electron from a positively charged ion than from a neutral atom. The third ionization energy of magnesium is enormous, however, because the Mg2+ ion has a filled-shell electron configuration.