Question

problem
Statement
Problem question:
Statement
ionization energy decreases with the increasing size of meci
atom Out of cesium, lithium potassium and sodium, which wil
have the lowest ionization energ?
Both the came
fr
Statements
1)Cesum has the largest size
2) The size of sodium lies between potassium and ithium​

Answer 1

Answer

Cesium has the largest size among the given elements, hence possess lowest Ionization energy.

Explanation:

The sizes of cesium Cs , lithium Li , potassium K and sodium Na are in the following order :

Li < Na < K < Cs

The Ionization energy increases with increase in atomic size , hence the order of Ionization energy is as follow :

Li > Na > K> Cs