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Arrange in decreasing order of Ionisation enthalpy F Cl Br I At

Arrange in decreasing order of Ionisation enthalpy F Cl Br I At

Grade:11

5 Answers

P S S C ASLESH
35 Points
3 years ago
The decreasing order of Ionization enthalpy is 
At
Reason:  In groups atomic size increases that means, nuclear attraction decreases. So Ionozation Enthalpy Decreases when moving from top to bottom in a group.
Sirajudden
29 Points
3 years ago
In a Group if we go down Ionisation enthalpy decreases bcoz of increase in size of atom. Which ultimately decrease the force of attraction on Valence electrons so it becomes more and more easier to release the electron.
Ankit Yadav
47 Points
2 years ago
As we move down the group ,ionisation energy decreases because the size of atoms of elements increases drastically and holding electron becomes diificult for the nucleus . 
So IE order = F > Cl> Br > I. 
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36 Points
2 years ago

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