Question

Define IE and IE2.why is IE2>IE1. Discuss the factor that effect IE of an atom

Answer 1

Explanation:

Consider a atom with equal no of proton and electron n

Ionisation energy is the amt of energy requires to remove an electron from the gaseous element to infinity (it is far from its nuclear force).

When you remove one electron the number of electron will decrease and proton remain same.

So when you remove second electron(IE2) the amount of energy will increase because nuclear force due to proton will increase.

Also for IE1 there is a repulsion force from its inner subsequent electron which helps to remove the electron thus less IE1 Then IE2

Answer 2

Explanation:

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 .