Question

define IE1,IE2? why IE2>IE1? write the factors influence on Ionizontal potential?​

Answer 1

Ionisation Energy or Ionisation Enthalpy is the enrgy required to remove the most loosely bound electron from an isolated gaseous atom . and IE1 , IE2 , these are the removal of first as well as second electron from an atom and the notation that u have given is wrong , the second ionisation energy is always more than that of first ionisation energy beacuse , once a atom looses one electron , then it will trying to make it more stable , so, the force that nucleaus exert on outer shell electron will be increased , in that case we have to apply more force for removing the 2nd electron . 

FACTORS AFFECTING IE 

1 - Atomic radius , 2 - Nuclear charge, 3 - Orbital penetration 

4 - Sheilding or screening effect,       5 - Electron pairing within a subshell . 

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