Question

Difind ie1 and ie2. Why is ie2>ie1for a given atom?discuss the factors that effect IE of an element.

Answer 1

Answer:

Ionization enthalpy 1 may be defined as the energy required to remove an electron from the atom in it's gaseous state.

Ex: Mg + 1e ==> Mg1+

Ionization enthalpy 2 is defined as the energy required to remove an electron from the atom in it's excited state.

Ex: Mg1+ + 1e ==> Mg2+

IE2 required more energy to remove an electron than IE1.

• Atomic size
• Effective nuclear charge

• Penetrating effect

HOPE IT HELPS YOU

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 .