Problem: Arrange the following elements in order of increasing first ionization energy.Mg, Al, Si, P, S

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We are asked to arrange the given elements in order of decreasing first ionization energy.

Ionization energy is the energy required to remove an electron from a gaseous atom or ion.

The trend of the ionization energies of the elements can be observed in the periodic table:

increases going from left to right of a period

decreases going down a group

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Problem Details

Arrange the following elements in order of increasing first ionization energy.

Mg, Al, Si, P, S

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Our tutors have indicated that to solve this problem you will need to apply the Periodic Trends: Ionization Energy concept. You can view video lessons to learn Periodic Trends: Ionization Energy. Or if you need more Periodic Trends: Ionization Energy practice, you can also practice Periodic Trends: Ionization Energy practice problems.