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Question
What do you understand by isoelectronic species? Name a species that will be isoelectronic with the following atom or ion:-
F-
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Solution
Atoms and ions having the same number of electrons are called isoelectronic species.
F– ion has 9 + 1 = 10 electrons. Thus, the species isoelectronic with it will also have 10 electrons. Some of its isoelectronic species are Na+ ion (11 – 1 = 10 electrons), Ne (10 electrons), O2– ion (8 + 2 = 10 electrons), and Al3+ ion (13 – 3 = 10 electrons).
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