, ionisation energy , factors affecting ionisation energy , first ionisation energy , second ionisation energy

1. Ionisation Energy
Dr. Mithil Fal Desai
Shree Mallikarjun and Shri Chetan Manju Desai College
Canacona Goa

2. e-
e-
e-
e-
Ionisation energy
+
Amount of energy required to remove the most loosely bound electron
from an isolated gaseous atom
I. E.1

3. e-
e-
e-
e-
Second ionisation energy
+
I. E.1
+ +I. E.2

4. Periodic trend in Ionisation energy

5. Factors affecting Ionisation energy
• Size of atom
• The charge on atom
• How effectively inner electron shell screen
the nuclear charge
• Type of electron

6. I. E.1< I. E.2<I.E.3
Atomic number increases
• I.E. decreases down the group
• I.E. increases along the row
Ionisation energy