Question

In: Chemistry

Arrange the following atoms in order of decreasing first ionization energy (largest first): -Argon -Cesium -Chlorine...

Arrange the following atoms in order of decreasing first ionization energy (largest first):
-Argon

-Cesium

-Chlorine

-Potassim

Solutions

Expert Solution

Ionization energy increases on moving left to right along a period due to increase increases in effective nuclear charge.

On moving down the group ionization energy decreases due to increase in atomic size.

On the basis of positions in periodic table , these elements can be arranged in order of decreasing ionization energy as,

Argon > chlorine > potassium > Cesium


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