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

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


5 Answers

35 Points
one year ago
The decreasing order of Ionization enthalpy is 
Reason:  In groups atomic size increases that means, nuclear attraction decreases. So Ionozation Enthalpy Decreases when moving from top to bottom in a group.
29 Points
one year 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
one year 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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37 Points
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