The Isoelectronic Series

All members of an isoelectronic series have the same number of electrons.
Example:
O2−, F, Na+, Mg2+, Al3+ (Having all 10 electrons)
As the nuclear charge increases in an isoelectronic series, ions become smaller:
O2− > F > Na+ > Mg2+ > Al3+

Exercise 1 on Comparing Sizes of Atoms and Ions of an Isoelectronic Series

Exercise 1 on Cations and Anions of an Isoelectronic Series

Check your answers here: Solution to the Exercise on Cations and Anions of an Isoelectronic Series



Exercise 2 on Comparing Sizes of Atoms and Ions of an Isoelectronic Series

Exercise 2 on Cations and Anions of an Isoelectronic Series

Check your answers here: Solution to the Exercise on Cations and Anions of an Isoelectronic Series



summary-trends-ionic-sizes


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Date of last modification: Summer , 2019