1.

Define ionosation energy and why I.E2 >I.E1 and explain influenceing factor​

Answer»

Answer:

IONISATION energy refers to the energy needed to be supplied to remove an electron from the isolated gaseous atom.

Explanation:

IE2>IE1 because after removal of an electron as the atomic size DECRASES EFFECTIVE nuclear charge consequently INCREASES ,it becomes more difficult to remove next electron.



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