Arrange these elements according to first ionization energy. Highest ionization energy Kr Br Se As Ge Ga Ca K Lowest ionization energy Macmillan Learning Hint There is a general trend for ionization energy within a period of the periodic table. However, elements with a filled s or half-filled p subshell have higher ionization energies than expected by the general trend.

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Chapter1: Chemical Foundations
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Says my answer was wrong, but the order seems correct. It said that there is an exception and it occurs when new subshells are occupied, but I don't know what it means by that.

Arrange these elements according to first ionization energy.
Highest ionization energy
Kr
Br
Se
As
Ge
Ga
Ca
K
Lowest ionization energy
O Macmillan Learning
Hint
There is a general trend for ionization
energy within a period of the periodic
table. However, elements with a filled s
or half-filled p subshell have higher
ionization energies than expected by
the general trend.
Transcribed Image Text:Arrange these elements according to first ionization energy. Highest ionization energy Kr Br Se As Ge Ga Ca K Lowest ionization energy O Macmillan Learning Hint There is a general trend for ionization energy within a period of the periodic table. However, elements with a filled s or half-filled p subshell have higher ionization energies than expected by the general trend.
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It's still wronge after switching Se and As

Arrange these elements according to first ionization energy.
Highest ionization energy
Kr
Br
As
Se
Ge
Ga
Ca
K
Lowest ionization energy
< Feedback
Ⓒ Macmillan Learning
The atom with the ns² electron
configuration is particularly stable and
therefore has a higher ionization energy
than the element directly to the right of
it in the periodic table.
Transcribed Image Text:Arrange these elements according to first ionization energy. Highest ionization energy Kr Br As Se Ge Ga Ca K Lowest ionization energy < Feedback Ⓒ Macmillan Learning The atom with the ns² electron configuration is particularly stable and therefore has a higher ionization energy than the element directly to the right of it in the periodic table.
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